A sphere is...

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A sphere is rotating between a rough wall and a smooth wedge as shown in the fig. If u is the coefficient of friction between then find the normal reaction between the wall and the sphere.

#Physics #Mechanics

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7 Answers

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Swastika dutta ·2009-10-07 21:18:15

well.. the answer is not given.

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Lokesh Verma ·2009-10-07 23:36:08

This is a good problem...

Try to draw the fbd.. that is the most important thing...

Here friction will reduce/ Increase normal reaction... Try to do that.. otherwise I will fill the proof..

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xYz ·2009-10-07 23:49:10

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Philip Calvert ·2009-10-08 00:43:39

let the normal reaction from the wall be N and from the wedge be N₁ then

N=N_{1}sin\theta
\mu N+N_{1}cos\theta =mg

\Rightarrow N = \frac{mg}{\mu +cot\theta }

perhaps not so good question unless you move the wedge :P

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Swastika dutta ·2009-10-08 00:49:05

thanx...:)

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Lokesh Verma ·2009-10-08 01:12:28

Now in the same problem try and find the number of turns before it stops..

given initial angular velocity is Ï‰₀

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msp ·2009-10-08 01:27:44

w₀²=2Î±Î¸

find theta and for one revolution theta =2Ï€.

Î±=R(fr₁-fr₂)/I_com

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Your Answer

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