Rotating objects - PowerPoint PPT Presentation

Rotating objects tend to keep rotating while non-rotating objects tend to remain non-rotating.

Rotating objects tend to keep rotating while non-rotating objects tend to remain non-rotating. In the absence of an external force, the momentum of an object remains unchanged—conservation of momentum. In this chapter we extend the law of momentum conservation to rotation.

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Weight (force) goes up, but so does mass (inertia).

Weight (force) goes up, but so does mass (inertia). The two cancel out, so the two skateboards move at the same rate. Weight due to gravity (down) Amount of weight keeping board on ramp Amount of weight making board move down ramp.

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