Two flat belts each of mass 20 g are lying on a horizontal surface. First belt is 20 cm long and the second is wider and only 10 cm long. They are kept on a thin wall 10 cm high so that half of them is over the top of wall. What is the ratio of the amount of work done in keeping them on the wall?

Q: Two flat belts each of mass 20 g are lying on a horizontal surface. First belt is 20 cm long and the second is wider and only 10 cm long. They are kept on a thin wall 10 cm high so that half of them is over the top of wall. What is the ratio of the amount of work done in keeping them on the wall?

(a) 1 : 1

(b) 2 : 1

(c) 2 : 3

(d) 1 : 3

Ans: (c)