A solid uniform disc of mass m rolls without slipping down an inclined plane with an acceleration a. The frictional force on the disc due to surface of the plane is
A
2 ma
B
ma
C
ma
D
ma
Text Solution
Verified by ExpertsThe correct answer is:
D
Torque about COM
f.R = Ι · α (a = α R)
F.R = 
a = 
⇒ 
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