Theory of Machine
Two systems shall be dynamically equivalent when

The mass of two are same
M.I. of two about an axis through e.g. is equal
All of these
G. of two coincides

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

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

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