Question

A monkey of mass 40 kg climbs on a rope (Fig. 5.20) which can stand a maximum tension of 600 N. In which of the following cases will the rope break: the monkey (a) climbs up with an acceleration of 6 m s –2 (b) climbs down with an acceleration of 4 m s –2 (c) climbs up with a uniform speed of 5 m s –1 (d) falls down the rope nearly freely under gravity? (Ignore the mass of the rope). Fig. 5.20

Answer 1

A is the answer because as the monkey goes up the net tension in string is the sum of weight MG and the force MA due to which the tension is 640 and the string breaks.