Question: Average torque on a projectile of mass 𝑚, initial speed 𝑢 and angles of projection θ, between initial and final position 𝑃 and 𝑄 as shown in figure about the point of projection is
(A) mu^{2}\sin \theta
(B) mu^{2}\cos \theta
(C) \dfrac{1}{2}mu^{2}\sin 2\theta
(D) \dfrac{1}{2}mu^{2}\cos 2\theta
Answer: option: (C)
Solution:
