The bob of a pendulum is released from a horizontal position. If the length of the pendulum is $1.\;5 m$, what is the speed (in $m/s$) with which the bob arrives at the lowermost point, given that it dissipated $5\%$ of its initial energy against air resistance ?
The bob of a pendulum is released from a horizontal position. If the length of the pendulum is $1.\;5 m$, what is the speed (in $m/s$) with which the bob arrives at the lowermost point, given that it dissipated $5\%$ of its initial energy against air resistance ?
- A
$2.48$
- B
$8.69$
- C
$5.28$
- D
$7.48$
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