A rope has a uniform mass density of 0.4 kg/m. The rope is 10 m long a – McqOptions

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1.	A rope has a uniform mass density of 0.4 kg/m. The rope is 10 m long and is lowered into a 10 m deep pit. The bottom part of the rope just touches the bottom of the pit. What is the work done to pull the rope out of the well completely? (Assume g = 10m/s2)
A.	200 J
B.	400 J
C.	2000 J
D.	4000 J
Answer» B. 400 J

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