Question

In the experiment of balancing moments, suppose the fulcrum is at the 60 cm mark, and a known mass of 2 kg is used on the longer arm. The greatest mass of m which can be balanced against 2 kg such that the minimum distance of either of the masses from the fulcrum is at least 10 cm. (Neglect mass of meter scale.) What will be the value of m?

(A) 12 kg

(B) 4 kg

(C) 6 kg

(D) 8 kg

Answer 1

The correct option is (A) 12 kg.

Explanation:

Fulcrum is at 60 cm mark. 2kg mass is on longer arm. Greatest mass m is to be balanced against 2kg. Condition is minimum distance of either of mass is 10 cm