A body is displaced from position to position

PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A body is displaced from position

A

to position

B

. The kinetic and potential energies of the body at positions

A

and

B

are

K_A=50\,\text{J},\quad U_A=-30\,\text{J},\quad K_B=10\,\text{J},\quad U_B=20\,\text{J}.

Find the work done by: (a) Conservative forces (b) All forces (c) Forces other than conservative forces.

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