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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

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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.

Does the work done by a force depend on the frame of reference ?

Now work is done by a force on an object if

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

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

Assertion:The work done by a conservative force such as gravity depends on the initial and final positions only Reason: The work done by a force can not be calculated if the exact nature of the force is not known.

work done by constant force and variable force

Work done by a constant force and Work done by a variable force

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