Theory of Machine
Hammer blow

Varies inversely with the square of the speed
Is the maximum horizontal unbalanced force caused by the mass provided to balance the reciprocating masses.
Is the maximum vertical unbalanced force caused by the mass added to balance the reciprocating masses
Varies as the square root of the speed

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Theory of Machine
In elliptical trammels

All four pairs are turning
One pair turning and three pairs sliding
Two pairs turning and two pairs sliding
Three pairs turning and one pair sliding

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