A bucket of mass Mis pulled upwards with a rope of mass m with an acceleration 'a' from a well. The tension in the rope is (A) (M+m) g (B) (M+m) a (C) (M-M) (g+a) (D) (M+m) (g+a)
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Answer:
the answer will be 987
Explanation:
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Answered by
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Answer:
option D [m+M] [g+a]
Explanation:
Correct option is A)
Work done by the person is the change in potential energy of the bucket and the rope.
Given, the rope has a uniform mass m. So the center of mass for the rope is at half of the length of the rope.
So, it will be at a distance h/2 from the bottom.
Work done = Change in PE of bucket+Change in PE of rope
W=Mgh+mg
2
h
=(M+
2
m
)gh
Option D
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