Theory of Machine
Which of the following disciplines provides study of relative motion between the parts of a machine?

Mechanisms
Kinematics
Applied mechanics
Theory of machines

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Theory of Machine
A thin circular disc is rolling with a uniform linear speed, along a straight path on a plane surface. Which of the following statement is correct in this regard?

The centre of the disc has centrifugal acceleration
All points of the disc have the same velocity
The point on the disc making contact with the plane surface has zero acceleration
The centre of the disc has zero acceleration

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