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Question
Figure E-3
To lift the 5000-N block, the man finds that he must pull 10 m of rope through his hands for every 1 m the block rises. Neglecting the weights of the pulleys and friction, how hard must the man pull on the rope to raise the block?
1) 5 N
2) 50 N
3) 500 N
4) 5000 N
which is in accord with
5) Newton's second law.
6) that impulse equals change in momentum.
7) (F d) input = (F d) output.
8) mechanical energy can be stored as potential energy.
Answer
This answer is hidden. It contains 3 characters.
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