Mechanical Engineering - Theory of machines - Discussion

Discussion Forum : Theory of machines - Section 8 (Q.No. 6)
6.
A system of masses rotating in different parallel planes is in dynamic balance if the
resultance force is equal to zero
resultant couple is equal to zero
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
Answer: Option
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