With what minimum acceleration can a fireman slide down a rope whose breaking-strength is 2//3 rd of his weight?

Options

A. `2//3 g`
B. g
C. `1//3 g`
D. zero

Answer

c

Explanation

`mg - T = ma implies mg -(2)/(3) mg = ma implies a=(1)/(3)g`
Thus correct choice is (c).