Question: particle is moving on a circular path of radius 𝑟 with uniform velocity 𝑣. The change in velocity when the particle moves from 𝑃 to 𝑄 is (∠𝑃𝑂𝑄 = 40°)
(A) 2𝑣 cos 40°
(B) 2𝑣 sin 40°
(C) 2𝑣 sin 20°
(D) 2𝑣 cos 20°
Answer: option (C)
Solution:
A particle is moving on a circular path of radius 𝑟 with uniform velocity 𝑣. The change in velocity when the particle moves from 𝑃 to 𝑄 is (∠𝑃𝑂𝑄 = 40°)
with
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