Question

In a wire, when elongation is 2 cm energy stored is E. If it is stretched by 10 CM, then the energy stored will be
a) E
b) 2 E
c) 4 E
d) 25 E​

Answer 1

Explanation:

If it is stretched by 10 cm, then the energy stored will be. E2=25E1.

Answer 2

Explanation:

A boy of mass m climbs up a conveyor belt with a constant acceleration. The speed of the belt is v =

gh/6

and the coefficient of friction between the boy and conveyor belt is μ=

3

3

5

. The boy starts from A and moves with the maximum possible acceleration till he reaches the highest point B.

Work done by gravity to w.r.t. the conveyor belt is  

Medium

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