First slide

Work Energy Theorem

Question

The total workdone on a particle is equal to change in its kinetic energy

Moderate

A

Only if the forces acting on it are conservative
B

Only if gravitational force alone acts on it
C

Only if elastic force alone acts on it
D

For any kind of force acting on it

Solution

Work done by net external force acting on a body is equal to the change in its kinetic energy, this net external force may be conservative or a combination of conservative and non-conservative.

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