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Mechanical Engineering - Theory of machines - Discussion

Discussion Forum : Theory of machines - Section 4 (Q.No. 24)
Theory of machines
24.
The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the
unbalanced couples are caused only at higher speeds
unbalanced forces are not dangerous at higher speeds
effects of unbalances are proportional to the square of the speed
effects of unbalances are directly proportional to the speed
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
2 comments Page 1 of 1.
Ganeshr said:   4 years ago
F= mrw^2*cosθ.

Hence F is directly proportional to the square of speed.
Hence dynamic balancing necessary.
Rahul Kumar Thakur said:   5 years ago
Explain the answer in detail.
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