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If the amount of work done by a force de...

If the amount of work done by a force depends only on the initial and final positions of the object which has been moved, then such a force is called

A

A conservatitve or non conservative force

B

A conservatitve force

C

A non-conservative force

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
Conservative force path independent.
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A force is said to be conservative if work done by or agains the force depends only on initial and final positions of the body and not on the nature of path followed. A force is said to be non-conservative, if work done by or against the force in moving a body from one position to another, depeds on the path followed between these two positions. Potential energy is defined only for conservative forces. It does not exist for non-conservative forces. Read the above passage and answer the following question : (i) Give two examples, each for conservative and non-conservative forces. (ii) Potential energy does not exist for non-conservative forces. What does it imply ini day to day life ?

State the factors on which work done by a force depends.

Knowledge Check

  • Work done by a force on an object is zero, if

    A
    the force is always perpenicular to its acceleration
    B
    the object is stationary but the point of application of the force moves on the object
    C
    the force is always perpendicular to its velocity
    D
    the object moves in such a way that the point of application of the force remains fixed

  • The work done on an object does not depend on the :

    A
    displacement
    B
    angle between force and displacement
    C
    force applied
    D
    initial velocity of the object

  • The work done on an object does not depend upon the :

    A
    displacement
    B
    force applied
    C
    angle between force and displacement
    D
    initial velocity of the object

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