Question: A mass π is lowered with the help of a string by a distance β at a constant acceleration g/2. The work done by the string will be
(A) \dfrac{mgh}{2}
(B) -\dfrac{mgh}{2}
(C) \dfrac{3mgh}{2}
(D) \dfrac{-3mgh}{2}
Answer: Option (B)
Solution:
