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As shown in the figure, Tarzan travels f...

As shown in the figure, Tarzan travels from one place to another by swinging in the forest. Assume that the rope is just long enough to swing from point `A` to point `B`, what is his initial speed in order for him to reach point `B`?

A

`6ms^(-1)`

B

`4ms^(-1)`

C

`8ms^(-1)`

D

`2ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
Ans. (4)
By using work energy theorem `W=DeltaKE`
`-mg(0.2)=0-(1)/(2)mv^(2)rArrv=2ms^(-1)`
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