Question

A uniform horizontal metre scale of mass m is suspended by two vertical strings attached to its two ends. A body of mass 2m is placed on the 75-cm mark. The tensions in the two strings are in the ratio 

(a) 1 : 2 

(b) 1 : 3 

(c) 2 : 3 

(d) 3 : 4

Answer 1

Correct Answer is: (a) 1 : 2

T₁ + T₂ = 3mg.

Taking torques about A,

0.5mg + 0.75 x 2mg = 1 x T₂

∴ T₂ = 2mg, T₁ = mg