The work done on a particle of mass m by a force, K 
(K being a constant of appropriate dimensions), when the particle is taken from the point (a, 0) to the point (0, a) along a circular path of radius a about the origin in the x-y plane is:
A
B
C
D
0
Text Solution
Verified by ExpertsThe correct answer is:
D
suppose x = r cos θ
y = r sin θ
force on particle is 
force is in radial direction so work done by this force along given path (circle) is zero
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