MCQ
When a conservative force does positive work on a body, then the
  • Potential energy of body decreases
  • B
    Potential energy of body increases
  • C
    Total mechanical energy of body increases
  • D
    Total mechanical energy of body decreases

Answer

Correct option: A.
Potential energy of body decreases
a
(a)

$F=\frac{-d U}{d x}$

$\int d U=-\int F d r$

$\Rightarrow U$ will decrease

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