Madhurig at 11:50, 9 June 2021

2021-06-09T11:50:24Z

Madhurig: Created page with "{|border=1 ||'''Visual Cue''' ||'''Narration''' |- || '''Slide Number 1''' '''Title slide''' || Welcome to this tutorial on '''Energy Skate Park simulation'''. |- || '..."

2021-05-07T16:44:27Z

Created page with "{|border=1 ||'''Visual Cue''' ||'''Narration''' |- || '''Slide Number 1''' '''Title slide''' || Welcome to this tutorial on '''Energy Skate Park simulation'''. |- || '..."

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{|border=1
||'''Visual Cue'''
||'''Narration'''

|-
|| '''Slide Number 1'''

'''Title slide'''
|| Welcome to this tutorial on '''Energy Skate Park simulation'''.

|-
|| '''Slide Number 2'''

'''Learning objectives'''
|| In this tutorial We will,

Demonstrate '''Energy Skate Park''', '''PhET simulation'''.
|-
|| '''Slide Number 3'''

'''System Requirements'''
|| Here I am using-

Ubuntu Linux OS version 14.04

Java version 1.7.0

Firefox Web Browser version 53.02.2
|-
|| '''Slide Number 4'''

'''Pre-requisites'''
|| To follow this tutorial,

Learner should be familiar with topics in high school Physics.
|-
|| '''Slide Number 5 & 6'''

'''Learning Goals'''
|| Using this '''simulation''' we will learn,

About law of conservation of energy.

To show '''Pie Chart''' and '''Bar Graphs''' for energy changes.

To use '''Energy vs Position''' graph to show the energy value at a particular position.

To change '''Location''' and observe the energy changes.

About change in energy due to change in '''Mass''' and '''Friction'''.
|-
|| '''Slide Number 7'''
'''Law of Conservation of Energy'''
|| According to '''law of conservation of energy''',

Energy can neither be created nor destroyed.

It can only be converted from one form to another.

The total energy before and after the transformation is conserved.
|-
|| '''Slide Number 8'''

'''Potential Energy'''

'''PE = mgh'''

m=mass of object(kg),

g=acceleration due to gravity (m/s2)

h=height (m)
||'''Potential energy''' is the energy possessed by an object by virtue of its position.

'''PE = mgh '''

where,

m is mass of object

g is acceleration due to gravity and

h is height
|-
||'''Slide Number 9'''

'''Kinetic Energy'''

'''KE =1/2 mv<sup>2</sup>'''

m is mass of object (kg)

v is velocity (m/s)
||'''Kinetic energy''' is the energy possessed by a body due to its motion.

'''KE =1/2 mv<sup>2</sup> '''

where,

m is mass of object and

v is velocity
|-
||
|| Let us start the demonstration.

|-
|| '''Slide Number 10'''

'''Link for PhET simulation'''

[http://phet.colorado.edu/ http://phet.colorado.edu]
|| Use the given link to download the '''simulation'''.

[http://phet.colorado.edu/ http://phet.colorado.ed]
|-
|| Point to '''Energy skate park '''simulation.
|| I have already downloaded, '''Energy skate park simulation '''to my '''Downloads '''folder.

|-
|| To open java file,

Press '''Ctrl'''+'''Alt'''+'''T''' keys.

Type '''cd Downloads''' and press '''Enter'''.
|| To run the '''simulation''', open the terminal.

At the prompt type '''cd Downloads''' and press '''Enter'''.
|-
|| Type '''java -jar energy-skate-park _en.jar''' >> press '''Enter'''.

Point to interface.
|| Then type, '''java space hyphen jar space energy-skate-park_en.jar''' and press '''Enter'''.

'''Energy Skate Park simulation''' opens.
|-
|| Point to interface.
|| This is the interface of '''Energy skate Park simulation'''.

|-
|| Cursor on the interface.

|| Using this '''simulation''',

let's see how energy transformations happen in real world applications.
|-
|| Point to menu bar.

Point to '''File''', '''Tracks''' and '''Help'''.
|| Screen has a menu bar with menu items-

'''File'''

'''Tracks'''

'''Help'''
|-
|| Point to '''skater'''.

Click on '''Track''' menu.

Click on each track.
|| Screen has a '''PhET skater''' oscillating in a default loop.

To change the track of the '''skater''', click on '''Tracks''' menu.

Menu shows a list of '''tracks''' to choose.
|-
|| Point to panel on the right side of screen.

Point to each tool.
|| On the right side, there is a panel with controls.

These controls are used to, change the attributes in the '''simulation'''.
|-
|| Click on''' Reset''' button.

Click on '''Yes'''.
|| Click on '''Reset''' to reset the simulation.

Click on '''Yes''' to confirm the reset.
|-
|| Click on '''Choose Skater''' button.

Point to '''Choose Skater''' list.
|| Click on '''Choose Skater''' button on the panel.

'''Choose Skater''' panel opens.
|-
|| Point to each '''Skater''' and their mass.

Point to '''PhET Skater''' and '''mass'''.

Click on '''Ok''' button.
|| This panel shows different '''skaters''' along with their mass.

By default '''PhET Skater''' with '''75 kg mass''' is selected.

Click on '''Ok''' button.
|-
|| Point to '''Sim Speed''' slider.

Point to '''Play/Pause''' button, '''Step''' button.

Point to '''Zoom in''' and '''zoom out''' buttons.
|| At the bottom of the screen we have,

'''Sim Speed''' slider to control the speed of the animation.

'''Play/Pause''' and '''Step''' buttons.

'''Zoom in''' and '''zoom out''' buttons.
|-
|| Point to '''Sim Speed''' slider.

Drag the '''sim speed''' slider in between ''' slow''' and '''fast'''.
|| By default '''Sim Speed''' slider is on '''fast'''.

Drag the''' Sim speed''' slider between '''slow '''and '''fast'''.
|-
|| Click on '''Show Path''' button.

Point to purple dots.

Click on '''Stop''' button and then '''Pause''' button.
|| To show the path, click on '''Show Path''' button in '''Path''' section.

Observe the purple dots on the track.

Click on '''Stop''' button and then pause the '''simulation'''.
|-
|| Click on Purple dot.

Point to '''energies''', '''height''' and '''speed'''.
|| Click on any purple dot on the track.

The following information will be displayed:

'''Kinetic energy'''

'''Potential energy'''

'''Total energy'''

'''Height'''

'''Speed''' of skater.
|-
|| Click on '''Clear''' button.
|| Click on '''Clear''' button to clear the path.

|-
|| Click on '''Play''' button.
|| Now click on '''Play''' button to play the '''simulation'''.

|-
|| Click on '''Show Pie Chart''' check box.
|| On the right side panel under '''Energy Graphs''' section, click '''Show Pie Chart''' checkbox.

|-
|| Point to '''with Thermal''' checkbox.

Point to '''pie chart'''.

|| Observe that '''with Thermal''' checkbox also gets selected.

'''Pie chart''' shows conversion of '''Kinetic energy''' to '''Potential energy''' and vice-versa.
|-
|| Point to energy indicator box.

Point to each energy in the panel.
|| Energy indicator box is shown on the top right corner of the screen.

This box helps to identify the energy changes in the '''Pie Chart'''.
|-
|| Cursor on screen.
|| In this case '''potential energy''' is '''gravitational potential energy'''.

It is due to change in height of the '''skater''' in the gravitational field.
|-
|| Point to energy changes in the '''Pie chart''' when '''skater''' moves downwards.
|| As the '''skater''' moves downwards, his '''Potential energy''' decreases and '''Kinetic energy''' increases.

|-
|| Point to energy changes in the '''Pie Chart''' when '''skater''' moves upwards.
|| As '''skater''' moves upwards his '''Potential energy''' increases and '''Kinetic energy''' decreases.

|-
|| Drag the '''sim speed''' slider towards '''Slow'''.
|| Drag the '''sim speed''' slider towards '''Slow'''.

|-
|| Point to '''Pie Chart'''.

Point to '''Pie Chart'''.

|| You can still see a small amount of '''Potential energy''' at the bottom of the track.

This is because track is at a height above the ground level.
|-
|| Drag the track to ground.

Point to '''Pie Chart'''.
|| Drag the track to the ground level.

Observe that '''skater''' has zero '''Potential energy''' at the bottom of track and zero '''kinetic energy''' at the top.
|-
|| Drag the track above the ground level.
Click on '''Potential Energy Reference''' checkbox.

Point to '''P.E=0 at this dotted line'''.
|| Now I will drag the track above the ground level.

Click on '''Potential Energy Reference''' checkbox.

'''P.E=0 at this dotted line''' will display at the bottom of the screen.
|-
|| Drag '''Potential Energy Reference''' line upwards.

Point to '''Pie Chart'''.
|| Drag '''Potential Energy Reference''' line upwards to touch the bottom of the track.

Observe that now '''skater''' has zero '''Potential energy''' at the bottom of the track.
|-
|| Click on '''Bar Graph''' button.

Point to four energies in '''Bar graph'''.

Point to '''Bar Graph'''.

|| Next, click on '''Bar Graph''' button.

A '''Bar graph''' with four energies is shown.

Note the energy changes as the '''skater''' moves back and forth on the track.
|-
|| Point to '''Total energy''' in '''Bar Graph'''.
|| Here '''Total energy''' of the '''skater''' remains constant.

Therefore it obeys the law of conservation of energy.
|-
|| Click on blue point and drag it upwards.

Point to '''Bar Graph'''.

Close the '''Bar Graph'''.
|| Let us change the shape and height of the track.

Click on any blue point and drag.

Note the increase in '''Total''' energy with an increase in height of the track.

Close the '''Bar Graph'''.
|-
|| Click on '''Reset''' button>>In the confirm box click '''Yes'''.
|| Click on '''Reset''' button to reset the '''simulation'''.

|-
|| Click on '''Energy vs. Position''' button.

Point to '''Energy(joules) vs. Position(meters)''' graph.
|| Next click on '''Energy vs. Position''' button.

'''Energy(joules)vs.Position(meters)''' graph will display.
|-
|| Drag the track to the left side of screen.
|| Drag the track to the left side to view the graph and '''skater''' simultaneously.

|-
|| Point to '''Energy vs. Position''' graph.

Point to moving dotted line.

Point to moving dotted line.

|| Notice the energy changes with respect to position of '''skater'''.

Here you can see a moving dotted line.

It represents, energy of the '''skater''' at a particular position on the track.
|-
|| Point to four energy check boxes.

Click on '''Thermal energy''' check box.

Click on '''Pause''' button.
|| Graph has four energy check-boxes at the bottom.

To view the graph of any specific energy, uncheck remaining check boxes.

Click on '''Pause''' button to pause the '''simulation'''.
|-
|| Point to '''Copy''' button.

Point to graph.

Close the '''Energy vs. position''' graph.
|| Click on '''Copy''' button.

'''Copy''' button helps to show the energy values at particular position on the graph.

Close the graphs.
|-
|| Click on '''Energy vs. Time''' button.

Point to '''Energy vs. Time''' graph.
|| Now click on '''Energy vs. Time''' button.

'''Energy vs. Time''' graph opens.
|-
|| Point to '''sim speed''' slider, '''Stop'''/'''Go''', '''Playback''', '''Step''', '''Rewind''' and '''Clear''' buttons.
|| At the bottom of the graph we have-

'''Sim Speed''' slider,
'''Stop'''/'''Go''',
'''Playback''',
'''Step''',
'''Rewind''' and
'''Clear''' buttons.
|-
|| Click on '''Play''' button.
|| Click on '''Play''' button to play the '''simulation'''.

|-
|| Click on '''Stop''' button.
|| Click on '''Stop''' button.

|-
|| drag the '''sim speed''' slider between '''slow''' and '''fast'''.

Click on '''Playback''' button.
|| Lets drag the '''sim speed''' slider between '''slow''' and '''fast'''.

Then click on '''Playback''' button.
|-
|| Point to violet vertical line.

Point to '''kinetic''', '''Potential''' and '''Total energy''' values.
|| Notice a violet vertical line moving across the path.

Note the '''kinetic''', '''Potential''' and '''Total energy''' values at a given time.
|-
|| Point to '''Total energy'''.

Point to '''Kinetic energy''' and '''Potential energy''' values.

Point to '''Thermal energy''' value.

Close the '''Energy vs. Time''' graph.
|| Note that '''Total energy''' remains constant.

But, '''Kinetic energy''' changes to '''Potential energy''' and vice-versa.

Here '''Thermal energy''' is zero as there is no friction.

Close the '''Energy vs. Time''' graph.
|-
|| Click on '''Reset''' button>>In the confirm box click '''Yes'''.
|| Click on '''Reset''' button to reset the '''simulation'''.

|-
|| Cursor on interface.
Scroll to the bottom of the panel.
|| Let us see how mass of the '''skater''' will affect the '''total energy'''.

Scroll to the bottom of the panel.
|-
|| Click on''' Edit skater''' button.

Scroll down>>>Point to '''Mass''' text-box and slider.

Point to '''75 kg mass'''.
|| Click on '''Edit skater''' button.

Scroll down to see '''Mass''' text-box and '''Mass''' Slider.

By default '''Mass''' is '''75 kg'''.
|-
|| Click on '''Energy Vs. Time''' button.
|| Click on '''Energy Vs. Time''' button to open the graph.

|-
|| Drag the '''Mass''' slider gradually towards '''200'''.

Point to '''kinetic''', '''potential''' and '''Total''' energy values.
|| Drag the '''Mass''' slider gradually towards '''200'''.

Observe the change in energy as we change the skater's mass in the graph.

|-
|| Close the '''Energy Vs. Time''' graph.
|| Close the '''Energy Vs. Time''' graph.

|-
||
|| Now we will take the '''skater''' to different planets.

|-
|| Scroll up the panel.

Click on '''Reset''' button>>In the confirm box click '''Yes'''.

Point to '''Earth''' In the '''Location''' section.

Click on '''Energy vs. Time''' button.
|| Scroll up the panel.

Click on '''Reset''' button to reset the '''simulation'''.

In the '''Location''' section, by default '''Earth''' is selected.

Click on '''Energy vs. Time''' button.
|-
|| Click on '''Moon''' radio-button.

Point to '''skater''' and '''Gravity''' value.
|| Under '''Location''' section, click on '''Moon''' radio-button.

Observe that '''Skater''' flies off beacause '''moon''' has low '''Gravity''' value.
|-
|| Click on '''Return Skater''' button.
|| Click on '''Return Skater''' button.

|-
|| Point to '''Gravity''' text-box.

Point to '''skater'''.

Point to '''Total''' energy value.
|| Here '''Gravity''' value is '''1.62 N/kg''' which is less than that of '''Earth'''.

This results in decrease in the speed of '''skater'''.

Here '''Total energy''' decreases as gravity on '''Moon''' is less than that of '''Earth'''.
|-
|| Cursor on interface.

Close the '''Energy vs. Time''' graph.
|| Similarly explore '''Jupiter''' and '''Space''' locations and compare the energy changes.

Close the '''Energy vs. Time''' graph.
|-
|| Cursor on the interface.
|| Let us study the energy distribution for tracks with and without '''Friction'''.

|-
|| Click on '''Reset''' button>>In the confirm box click '''Yes'''.
|| Click on '''Reset''' button to reset the '''simulation'''.

|-
|| Scroll down>>Click on '''Track Friction''' button.

Point to '''Coefficient of Friction''' slider.

Click on '''Energy vs. Time''' button.
|| Scroll down to panel and click on '''Track Friction''' button.

Scroll down to see '''Coefficient of Friction''' slider.

Click on '''Energy vs.Time''' button.
|-
|| Drag the '''Coefficient of Friction''' slider slowly.

Point to '''Total energy'''.

Point to '''Thermal energy'''.
|| Drag the '''Coefficient of Friction''' slider gradually from '''None''' to''' Lots'''.

Observe the energy changes.

Here part of energy is converted to '''Thermal''' energy due to Friction.
|-
|| Cursor on interface.

Point to '''skater'''.

|| This is due to the resistance in motion caused by '''Friction'''.

'''Friction''' opposes the motion of the '''skater'''.

It causes him to lose energy and slow down.

Close the '''Energy vs. Time''' graph.
|-
|| '''Slide Number 11 & 12'''

'''Assignment 1'''
|| As an assignment,

Select '''Double Well''' track from '''Tracks''' menu and observe the energy changes.

Compare the energy changes in '''Double well''' track with '''Double Well Roller Coaster''' Mode.

Find the changes in the '''thermal''' energy .

And give an explanation.

(Hint-Right click on the '''Track''' and select '''Roller Coaster Mode''')
|-
|| '''Slide Number 13'''

'''Assignment 2'''
|| Using '''Tracks''' box,

Create tracks and observe the change in energies.
|-
||
|| Let us summarise.

|-
|| '''Slide Number 14'''

'''Summary'''
|| In this tutorial we have demonstrated,

How to use '''Energy Skate Park''', '''PhET simulation'''.
|-
|| '''Slide Number 15 & 16'''

'''Summary'''
|| Using this '''simulation''' we have learnt,

About law of conservation of energy.

To show '''Pie chart''' and '''Bar Graphs''' for energy changes.

To use '''Energy vs Position''' graph to show the energy value at a particular position.

To change '''Location''' and observe the energy changes.

About change in energy due to change in '''Mass''' and '''Friction'''.
|-
|| '''Slide Number 17'''

'''About Spoken Tutorial project'''
|| The video at the following link summarizes the Spoken Tutorial project.

Please download and watch it.

|-
|| '''Slide Number 18'''

'''Spoken Tutorial workshops'''
|| The '''Spoken Tutorial Project''' team:

conducts workshops using spoken tutorials and

gives certificates on passing online tests.

For more details, please write to us.

|-
|| '''Slide Number 19'''

'''Forum for specific questions:'''

Do you have questions in THIS '''Spoken Tutorial'''?

Please visit this site
Choose the minute and second where you have the question.
Explain your question briefly
Someone from our team will answer them.

|| Please post your timed queries on this forum.

|-
|| '''Slide Number 20'''

'''Acknowledgements'''
|| This project is partially funded by Pandit Madan Mohan Malaviya National Mission on Teachers and Teaching.

|-
|| '''Slide Number 21'''

'''Acknowledgement'''
|| Spoken Tutorial Project is funded by NMEICT, MHRD, Government of India.

More information on this mission is available at this link.
|-
||
|| This is Meenal Ghoderao from IIT-Bombay.

Thank you for joining

|}

@@ Line 113: / Line 113: @@
 || Use the given link to download the '''simulation'''.
-[http://phet.colorado.edu/ http://phet.colorado.ed]
+[http://phet.colorado.edu/ http://phet.colorado.edu]
 |-
 || Point to '''Energy skate park '''simulation.
@@ Line 140: / Line 140: @@
 |-
 || Cursor on the interface.
 || Using this '''simulation''',

PhET-Simulations-for-Physics/C2/Energy-Skate-Park/English - Revision history

Madhurig at 11:50, 9 June 2021

Madhurig: Created page with "{|border=1 ||'''Visual Cue''' ||'''Narration''' |- || '''Slide Number 1''' '''Title slide''' || Welcome to this tutorial on '''Energy Skate Park simulation'''. |- || '..."