Theory of Machine
The natural frequency of free transverse vibrations due to uniformly distributed load acting over a simply supported shaft is (where δS = Static deflection of simply supported shaft due to uniformly distributed load)

0.571/ √δS
0.6253/ √δS
0.4985/ √δS
0.5615/ √δS

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Theory of Machine
Angle of action of cam is defined as the angle

Of rotation of the cam for a definite displacement of the follower
Moved by the cam from beginning of ascent to the termination of descent
Through which the cam rotates during the period in which the follower remains in the highest position
Moved by the cam from the instant the follower begins to rise, till it reaches its highest position

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