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Question: Answered & Verified by Expert
The potential energy of a body is given by $U=A-B x^2$ (where $x$ is the displacement). The magnitude of force acting on the particle is
PhysicsWork Power EnergyJIPMERJIPMER 2012
Options:
  • A constant
  • B proportional to $x$
  • C proportional to $x^2$
  • D inversely proportional to $x$
Solution:
2775 Upvotes Verified Answer
The correct answer is: proportional to $x$
$U=A-B x^2$
$F=-\frac{d U}{d v}=2 B x$
$F \propto x$

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