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Work done in moving a body over a closed...

Work done in moving a body over a closed loop in zer'. Is this statement true for all forces?

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No, the statement is true only when motion is under conservative forces.
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True / False type questions : It is necessary that the work done in the motion of a body over a closed loop is zero for every force in nature.

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Knowledge Check

  • Assertion : A work done in moving a body over a closed loop is zero for every force in nature. Reason : Work done does not depend on nature of force.

    A
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    C
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    D
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    A
    If both Statement- I and Statement- II are true, and Statement - II is the correct explanation of Statement– I.
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    If both Statement - I and Statement - II are true but Statement - II is not the correct explanation of Statement – I
    C
    If Statement - I is true but Statement - II is false.
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    State if each of the following statements is true or false. Give reasons for your answer. (a) In an elastic collision of two bodies, the momentum and energy of each body is ocnserved. (b) Total energy of a system is always conserved, no matter what internal and external forces on the body are present. (c) Work done in the motion of a body over a closed loop is zero for every force in nature. (d) In an inelastic collision, the final kinetic energy is always less than the initial kinetic energy of the system.

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