A disc is purely rolling down an inclined plane of length ‘l’ & an – McqOptions

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1.	A disc is purely rolling down an inclined plane of length ‘l’ & angle θ. What is the value of friction acting on it? Let the mass of the disc be M & radius be R.
A.	(Mgsinθ)/3
B.	0
C.	(4Mgsinθ)/3
D.	(2Mgsinθ)/3
Answer» B.

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