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a force f is applied at the centre of a disc of mass M.what will be the minimum value of the coeffiecient of friction of surface for rolling?

a force f is applied at the centre of a disc of mass M.what will be the minimum value of the coeffiecient of friction of surface for rolling?

Grade:11

2 Answers

Aziz Alam IIT Roorkee
askIITians Faculty 233 Points
7 years ago
f-\mu mg=ma Equation corresponding to the forces acting on the disc

\mu mgR=I\alpha Torque equaation about the COM

a=\alpha R Rolling condition

If we solcve these 3 equations,

\mu =(f-\mu mg)/2mg
Aditya tiwari
14 Points
3 years ago
F/3mg.
This answer we by making two equation one of York balance and other of force balance then sustitutesuthe values .you will get the answer and comment on getting answer or on not getting answer 

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