A solid sphere of mass 
rolls without slipping on an inclined plane of inclination 
. What should be the minimum coefficient of friction, so that the sphere rolls down without slipping?
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
This is the case of rolling on rough inclined plane. Force of friction in this case will be
backward.
Hence, 
… (i)
and 
… (ii)
For pure rolling to take place, 
… (iii)
Solving Eqs. (i), (ii) and (iii), we get
Further, the force of friction calculated in Eq. (iv) for pure rolling to take place should be less than or equal to the maximum friction,
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