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0 votes
17.4k views
in Physics by (150k points)

The work done by the external forces on a system equals the change in
(a) total energy 

(b) kinetic energy

(c) potential energy 

(d) none of these.

1 Answer

+1 vote
by (87.2k points)
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Best answer

(a) total energy

Explanation:- 

External forces will either change KE or PE or both of a system. Since total mechanical energy (KE+PE) of a system is conserved when no external force acts, hence work done by external force will change total mechanical energy.

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