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Question
In raising a 5000-N piano with a pulley system, for every 1 m of rope pulled down, the piano rises 0.1 m. Ideally, this means the force needed to lift the piano isA) 50 N.
B) 500 N.
C) 5000 N.
D) not enough information
Answer
This answer is hidden. It contains 1 characters.
Related questions
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