Theory of Machine
If some links are connected such that motion between them can take place in more than one direction, it is called

Successfully constrained motion
Partially constrained motion
Completely constrained motion
Incompletely constrained motion

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Theory of Machine
Hammer blow

Varies as the square root 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 inversely with the square of the speed

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