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When an object slides along a rough siuf...

When an object slides along a rough siuface, the force of friction does negative work on it. Is it ever possible for friction to do positive work? Give an example.

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PHYSICS GALAXY - ASHISH ARORA-WORK, ENERGY AND POWER-Discussion Question
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  14. Does the work done in raising a body through a certain height depend u...

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  15. The displacement of a body depends on the reference frame of the obser...

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  16. A car is running on a road. The driver applies the brakes such that th...

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  17. Why is ittiring to hold a heavy weight eventhough no work is done ?

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  18. If positive work is done putting a body into motion, is the work done ...

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  19. Consider the situation - A laborer carrying bricks on his head on a le...

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

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