Question

Two masses m₁ = 5kg and m₂ = 4.8 kg tied to a string are hanging over a light frictionless pulley. What is the acceleration of the masses when lift is free to move ? (g = 9.8 ms^-2)

(a) 0.2 ms^-2

(b) 9.8 ms^-2

(c) 5 ms^-2

(d)  4.8 ms^-2

Answer 1

Correct option (d)  4.8 ms^-2

Explanation:

On releasing, the motion of the system will be according to figure.

m₁g - T = m₁a                    .....(i)

and    T  -  m₂g = m₂a              .......(ii)