Answer:
Work done = 0.31 J
Step-by-step explanation:
Radius, r = 10cm = 0.1 m
Mass of the object, m = 50 g = 0.05 kg
Force, F = mg = 0.05 * 9.8
F = 0.49 N
Distance covered by the object = 2πr
Distance moved by the object = 2π*0.1 = 0.63 m
Work done = Force * Distance
Work done = 0.49 * 0.63
Work done = 0.31 J