A Piano Mover Raises a 1000-N Piano at a Constant

question 81

Multiple Choice

A piano mover raises a 1000-N piano at a constant speed using a very light rope in a frictionless pulley system,as shown in the figure.With what force is the mover pulling down on the rope?

• A)2000 N
• B)1000 N
• C)500 N
• D)250 N
• E)Depends on the speed of the piano.

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