Demonstrates the difference between potential and kinetic energy and how it can change from one to the other using a pendulum or flywheel. Also demonstrates elastic potential energy in a spring.
Demonstrates kinetic and static sliding friction and rolling friction on bodies and between different surfaces on a flat or inclined plane.
Demonstrates simple harmonic motion (oscillation) in springs and pendulums, and its usefulness.
Demonstrates how rotational friction affects the efficiency of popular machine elements, including screw jack, a wedge and different bearings.
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