A weight lifter holds 900 N over his head .is he doing work on the weights?
Added by Mariano I.
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Work is defined as the force applied on an object multiplied by the displacement of the object in the direction of the force. Show more…
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A weight lifter holds $900 \mathrm{N}$ (about 200 lb) over his head. Is he doing work on the weights? Did he do any work on the weights? Explain.
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