A uniform chain of mass M and length L is held vertically in such a that its lower end just touches the horizontal floor. The chain is released from rest this position. Any portion of chain that strikes the floor comes to rest. Assuming that the chain does not form a heap on the floor. Then

A uniform chain of mass M and length L is held vertically in such a th

1.	A uniform chain of mass M and length L is held vertically in such a that its lower end just touches the horizontal floor. The chain is released from rest this position. Any portion of chain that strikes the floor comes to rest. Assuming that the chain does not form a heap on the floor. Then
Answer» Force exterted by chain on the floor when a length x has REACHED the floor is `(3Mgx)/(L)` Force exerted by chain on the floor when a length x has reached the floor is `(2Mgx)/(L)` Force exerted on the floor by the falling part of chain at any MOMENT is TWICE as great as force exerted by the part already resting on the floor. Force exerted on the floor by the falling part of chain at any moment is same as force exerted by the already resting on the floor. Answer :A::C