1.

19.B) 3 kgIn the given figure, find mass of the block A, if it remains at rest, when the system is rele(C) 4 kg(D) 5 kgrest. Pulleys and strings are massless. I g = 10 m/s)(D) 3m(A) m(B) 2m(C) 2.5minn of the block C.

Answer»

Here, it is given that the block A is at rest. So the pulley attached to masses m and 2m must also be at rest because string is ideal(i.e. inelastic and massless). So for this pulley, total downward force(mg+2mg) is equal to total upward force(tension T=mass of A*g).So, mass of A=(1+2)m=3m.



Discussion

No Comment Found

Related InterviewSolutions