Theory of Machine
When a point at the end of a link moves with constant angular velocity, its acceleration will have

Coriolis component only
Radial and tangential components both
Tangential component only
Radial component only

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Theory of Machine
When a mass of a critically damped single degree of freedom system is deflected from its equilibrium position and released, then it will

Oscillate with constant amplitude
Oscillate with increasing time period
Oscillate with decreasing amplitude
Return to equilibrium position without oscillation

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