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Potential energy
0 J
Kinetic energy
0 J
Speed
0.00 m/s
Height
0.0 m
How to use: The track is a frictionless valley, so no energy is
lost. As the ball speeds down, its potential energy (PE)
becomes kinetic energy (KE), then it climbs back up and
the store reverses. Watch the bar under the track swap between green and yellow.
Try a heavy ball vs a light ball, then add an initial push and see the ball roll
further up the far arm.
Notice: the total energy stays the same the whole time — PE at the top equals KE at
the bottom. On a real track the ball would slow and stop because of friction; here there
is none, so it keeps swinging forever.