Theory of Machine
The maximum or minimum value of the swaying couple is

± 2a (1 - c) m.ω².r
± a (1 - c) m.ω².r
± (a/√2) (1 - c) m.ω².r
± c.m.ω².r

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Theory of Machine
Pitch point on a cam is

Any point on pitch curve
Any point on pitch circle
The point on cam pitch curve having the minimum pressure angle
The point on cam pitch curve having the maximum pressure angle

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Theory of Machine
In a cam drive with uniform velocity follower, the sharp corners of the displacement diagram are rounded off at the beginning and at the end of each stroke. This is done

Because the uniform velocity motion is a partial parabolic motion
In order to have acceleration in beginning and retardation at the end of stroke within the finite limits
Because of difficulty in manufacturing cam profile
Because of loose contact of follower with cam surface

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