Find out the velocity of block B in a pulley block system as shown in figure.

Explanation

In a given pulley block system the velocity of all the particle of string is let us assume v then.

`10 m//s` is the real velocity of block A then its component along string is v.
`implies 10 cos 53^@ = v" " ...(1)`
If `v_B` is the real velocity of block B then it component along string is v then
`v_Bcos37^@ = v" "...(2)`

From (1) & (2) `V_(B) cos 37^(@) = 10 cos 53^@`
`implies V_(b) = (10 xx 3//5)/(4//5) = 30/4 = 15/2 m//sec`.