Physics-
General
Easy

Question

A sphere is placed rotating with its centre initially at rest in a corner as shown in figure (A) & (B). Coefficient of friction between all surfaces and the sphere is fraction numerator 1 over denominator 3 end fraction. Find the ratio of the frictional force fraction numerator f subscript a end subscript over denominator f subscript b end subscript end fraction by ground in situations (A) & (B).

  1. 1    
  2. fraction numerator 9 over denominator 10 end fraction    
  3. fraction numerator 10 over denominator 9 end fraction    
  4. none    

The correct answer is: 1

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