Question

The work done in moving an object from A to B against a non-conservative force.
A. Cannot be recovered by moving the object from B to A
B. Is always entirely converted into heat

Answer 1

Answer:

A. Cannot be covered by moving the object from B to A.

Reason: Some amount of energy is always dissipated as heat energy, thus some energy cannot be recovered. Kinetic energy can be converted into potential energy while other energy also can be converted into potential energy but when potential energy is to be converted first it is converted into kinetic energy and not in anything else.

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Answer 2

Answer:

option A (cannot be recovered by moving the object from B to A)

Explanation:

As we know that non conservative force is path dependent function, hence depends upon path taken. so in case of this non conservative  force some amount of heat is loosed in terms of heat energy ,as energy is loosed so work done will also be loosed.so work done in moving object from A to B against a non conservative force cannot be recovered by moving the object from B to A  

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