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A uniform sphere of weight W and radius ...

A uniform sphere of weight `W` and radius 3 `m` is being held by a frictionless wall as shown in the figure. The tention in the string will be:

A

`5w//4`

B

`15w//4`

C

`15w//16`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
A
From geometry `:`
`cos theta =(3)/(5)`
`sin theta=(4)/(5)`
As sphere is at equilibrium ,
`T sin theta =w`
`T=(5w)/(4)`.
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Knowledge Check

  • A non-uniform bar of weight W and weight L is suspended by two strings of neigligible weight as shown in figure. The angles made by the strings with the vertical are theta_1 and theta_2 respectively. The distance d of the centre of gravity of the bar from left end is. .

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