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Question: Answered & Verified by Expert
The potential energy of a body is given by, $\quad U=A-B x^2$ (Where $x$ is the displacement). The magnitude of force acting on the particle is
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Options:
  • A Constant
  • B Proportional to $x$
  • C Proportional to $x^2$
  • D Inversely proportional to $x$
Solution:
2627 Upvotes Verified Answer
The correct answer is: Proportional to $x$
$U=A-B x^2 \Rightarrow F=-\frac{d U}{d x}=2 B x \Rightarrow F \propto x$

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