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Is a weight lifter lifting weights converting his work into kinetic energy?

Apr 21, 2008 by rshnu | Posted in Physics

Is a weight lifter lifting weights converting his work into kinetic energy?

If a hand is swinging a string with a ball attached to the end, is the string doing work on the ball?

Is the work done by a mountain climber's weight

Not sure about the first one because it could be considered kinetic energy because the weights are moving, but potential energy makes more since

yes the string has tension(force) upon on it which keeps the ball from flying away

wilsonr350 | Apr 21, 2008

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