The velocity ratio of an inclined plane where angle of inclination in θ is

The velocity ratio of an inclined plane where angle of inclination in θ is
A. Sinθ
B. Cosθ
C. Tanθ
D. 1 / sin⁡θ

Correct Option: Answer is D

Consider an inclined plane shown below, as the effort moves along OB, the load moves is lifted up through a vertical height AB

V.R = distance moved by effortdistance moved by load = OBAB

But Sinθ = opp/hyp = ABOB

therefore; = OBAB = 1sinθ

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