Theory of Machine
The Coriolis component of acceleration exists whenever a point moves along a path that has

Gravitational acceleration
Tangential acceleration
Linear displacement
Rotational motion

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Theory of Machine
A system of masses rotating in different parallel planes is in dynamic balance if the

Resultant force and resultant couple are both equal to zero
Resultant force is numerically equal to the resultant couple, but neither of them need necessarily be zero
Resultant force is equal to zero
Resultant couple is equal to zero

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