Simple Harmonic Motion Easing Worksheet

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Simple Harmonic Motion Easing Practice worksheet I

This worksheet explores the use of easing to mimic Simple Harmonic Motion in one dimension. It does not consider dampening forces such as friction or energy loss due to heat and so the motion continues indefinitely as a mathematical ideal but physically unrealistic situation.

[Easing knowledgebase]

	How to Position Tween
	How to ease in
	How to ease out
	How to change frame rate
	Calculating Velocity
	Calculating Acceleration

Exercise I "Simple" Simple Harmonic Motion (SHM)

[Click here to download the .fla file]

Easing Curve

Step I	Create a new document 600 x100 pixels. Make the grid 25x25 and visible. Draw an object, then make it into a symbol.


Step II	Position the object on the far left of the stage using the align tool.

Step III	Create new keyframe in frame 10 and position the object in the center of the stage using the align tool.

Step IV	Create a new keyframe in frame 20 and position the object to the far right of the stage using the align tool.

Step V	Create a keyframe in frame 30 and reposition the object in the center of the stage using the align tool.

Step VI	Create a keyframe in frame 40 and position the object in it's original location to the far left of the stage using the align tool.

Step VII	Right click on any frame between frame 1 and 10 and select "Create Motion Tween". Then in the "Properties" panel and change the "Ease" setting to -100% (ease in)

Step VIII	Right click on any frame between frame 10 and 20 and select "Create Motion Tween". Then in the "Properties" panel and change the "Ease" setting to 100% (ease out)

Step VIIII	Right click on any frame between frame 20 and 30 and select "Create Motion Tween". Then in the "Properties" panel and change the "Ease" setting to -100% (ease in)

Step X	Right click on any frame between frame 30 and 40 and select "Create Motion Tween". Then in the "Properties" panel and change the "Ease" setting to 100% (ease our)

Note: The slight pause at the end of each complete oscillation. This due to the looping effect. There are two successive frames where the object is in the same position creating a pause. (Click here to see how to fix this)