Theory of Machine
A body will begin to move down an inclined plane, if the angle of inclination of the plane is ________ the angle of friction.

None of these
Less than
Greater than
Equal to

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Theory of Machine
The contact ratio is given by

(Length of path of recess)/(Circular pitch)
(Length of the arc of approach)/cosφ
(Length of the arc of contact)/(Circular pitch)
(Length of the path of approach)/(Circular pitch)

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