Question

A block is dragged on a smooth plane with the help of a rope which moves with velocity v as shown in the figure. The horizontal velocity of the block is

(a) v

(b) v sinθ

(c) \(\frac{v}{sinθ}\) 

(d) \(\frac{v}{cosθ}\)

Answer 1

Answer is  (c) \(\frac{v}{sinθ}\) 

Let AB = x ,AC = x cos θ