A block of mass 25 kg is raised by a 50 kg man in two different ways as shown in Fig.What is the action on the floor by the man in the two cases ?If the floor yields to a normal force of 700 N, which mode should the man adopt to lift the block without the floor yielding ?

A block of mass 25 kg is raised by a 50 kg man in two different ways a

1.	A block of mass 25 kg is raised by a 50 kg man in two different ways as shown in Fig.What is the action on the floor by the man in the two cases ?If the floor yields to a normal force of 700 N, which mode should the man adopt to lift the block without the floor yielding ?
Answer» Solution :Consider the FORCES on the man in equilibrium : his WEIGHT, force due to the rope and NORMALFORCE due to the floor. (a)750 N (b)250 N, MODE (b)should be adopted.