Problem

Problem

A body is displaced from position A to position B. Kinetic and potential energies of the body at positions A and B are KA=50 J,UA=−30 J,KB=10 J and UB=20 J.K_A = 50 \text{ J}, U_A = -30 \text{ J}, K_B = 10 \text{ J} \text{ and } U_B = 20 \text{ J}. Find work done by (a) conservative forces (b) all forces (c) forces other than conservative forces.

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