Question

A bob hangs from a rigid support by an inextensible string of length l . If it is displaced through a distance l keeping the string straight & released, find the speed of the bob at the lowest position

Answer 1

"A bob hangs from a rigid support by an inextensible string of length l. If it is displaced through a distance l keeping the string straight & released, the speed of the bob at the lowest position can be found by below method:

When block is displaced by the displacement l then

Change in potential energy = gain in kinetic energy

Mgl = 1 / 2 mv^2

V= square root of 2gl

Hence, the answer is square root of 2gl

"

Answer 2

Answer:

Explanation:

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