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The bob of a pendulum is released from a...

The bob of a pendulum is released from a horizontal position. If the length of the pendulum is 1.5m, what is the speed with which the bob arrive at the lower most point, given that, it dissipated 5% of its initial energy against air resistance?

A

`3.14`

B

`5.28`

C

`1.54`

D

`8.26`

Text Solution

Verified by Experts

The correct Answer is:
`(2)`
According to the law of conservation of energy, the total energy of the system remains constant. `95 % of P.E_(i) = K.E_(f)`
`i.e ,1/2 mv^(2) = (95)/(100)xx mgl`
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