Asked in PMC Practice Test 18 (2021) 2021

The work done by a conservative force in a complete cycle is:

Correct answer: A. Zero

  • A. Zero
  • B. More than zero
  • C. Less than zero
  • D. None of these options are correct

Explanation

In a conservative field, the work done is independent of path followed by a body in a closed path. Work done by a conservative force is zero because displacement is zero (In a closed/ complete cycle, displacement is zero). Hence, A is the correct option

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About Work

Work is done when a force produces displacement, with its value determined by the component of force along the displacement. The topic covers positive, negative and zero work, work by variable forces from force-displacement graphs, and the connection between net work and change in kinetic energy.

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