Momentum and CollisionHard

Question

There are two thin films, A of liquid and B of polythene, identical in size. They are being pulled with same maximum weight W. If the breadth of the films is increased from b to 2b then the corresponding weights will be respectively -

Options

A.W, W
B.
C., W
D.W,

Solution

Potential energy
= mg (rh)2
according to Zurin law rH = constant ⇒ u1 = u2

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