Question

Block A of weight 100 N rests on a frictionless inclined plane of slope angle ${30}^{\circ }$. A flexible rope attached to A passes over a pulley and is connected to block B of weight B. The weight W (in N, correct upto two decimal place ) for which system is in equilibrium is____.

• A. 50

Answer 1

The correct option is A 50

For equilibrium
W = T ...(1)
$T=100\sin {30}^{\circ }....\left(2\right)$
From equation (1) and (2)
$w=100\sin {30}^{\circ }$
= 50N