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In question number -1,ifu=sqrt(7gR) then...

In question number `-1,ifu=sqrt(7gR)` then ltbr (a) What is the velocity at topmost point?
(b) What is tension at topmost point?
(c) What is tension at bottommost point?

Text Solution

Verified by Experts

The correct Answer is:
A, B, C
(a) `v=sqrt(u^(2)-2gh)=sqrt(7gR-2g(2R))=sqrt(3gR)` ltbr. (b) `T+mg=(mv^(2))/(R)=(m)/(R)(mgR)`
:. `T=2mg`
(c) `T-mg=(mu^(2))/(R)=(m)/(R)(7gR)`
:. `T=8mg`
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