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JIPMER 2012
Exam
JIPMER
Year
2012
Subject
Physics
Chapter
Work, Power and Energy

JIPMER 2012 · Physics · Work, Power and Energy

The potential energy of a body is given by U=A-B x^2 (where x is...

The potential energy of a body is given by U=A−Bx2U=A-B x^2 (where xx is the displacement). The magnitude of force acting on the particle is

Options

  1. Aconstant
  2. Bproportional to xx
  3. Cproportional to x2x^2
  4. Dinversely proportional to xx

Correct answer

B. proportional to xx

Step-by-step solution

U=A−Bx2U=A-B x^2 F=−dUdv=2BxF=-\frac{d U}{d v}=2 B x F∝xF \propto x
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