James Pulls a Rope and He Has a Mass of 77

question 162

Multiple Choice

James pulls a rope and he has a mass of 77 kg. He pulls 20 m of the rope and does 40 N×m of work on the rope. What was the force he put on the rope to pull it up?

• A)1540 N
• B)2 N
• C)½ N
• D)4620 N

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