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Stan raises a 1200-N piano a distance of 5.00 m using a set of pulleys....

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Stan raises a 1200-N piano a distance of 5.00 m using a set of pulleys. Stan pulls in 20.0 m of ropea. How much effort force would Stan apply if this were an ideal machine?b. What force is used to balance the friction force if the actual effort is 340 N?c. What is the work output?d. What is the input work?e. What is the mechanical advantage?

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