When a body is projected at an angle with the horizontal in a uniform gravitational field of the earth, the angular momentum of the body about the point of projection, as it proceeds along its path
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a
remains constant
b
increases
c
decreases
d
initially decreases and after its highest point increases
answer is B.
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Detailed Solution
Torque, τ0=mg×r⊥As, r⊥ is continuously increasing or torque is continuously increasing on the particle. Hence, angular momentum is continuously increasing.