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Work, Energy And Power

Question

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The potential energy of a system increase if work is done

By the system against a conservative force

By the system against a nonconservative

upon the system by a conservative force

upon the system by a nonconservative

Solution

A.

By the system against a conservative force

The potential energy of a system increases if work is done by the system against a conservative force.
-ΔU = W_{conservative face}

Some More Questions From Work, Energy and Power Chapter

What is the relation between kWh and Joule?

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