PEARSON ETEXT ENGINEERING MECH & STATS
15th Edition
ISBN: 9780137514724
Author: HIBBELER
Publisher: PEARSON
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Find : 1. dynamic load on each bearing due to the out-of-balance couple; and 2. kinetic energy of
the complete assembly.
[Ans. 6.12 kg: 8.7 N-m]
L
2.
3.
4.
5.
1.
2.
5.
DO YOU KNOW?
Why is balancing of rotating parts necessary for high speed engines?
Explain clearly the terms "static balancing' and 'dynamic balancing'. State the necessary conditions
to achieve them.
Discuss how a single revolving mass is balanced by two masses revolving in different planes.
Chapter 21: Balancing of Rotating Masses .857
Explain the method of balancing of different masses revolving in the same plane.
How the different masses rotating in different planes are balanced?
OBJECTIVE TYPE QUESTIONS
The balancing of rotating and reciprocating parts of an engine is necessary when it runs at
(a) slow speed
(b) medium speed (c) high speed
A disturbing mass, attached to a rotating shaft may be balanced by a single mass m, attached in
the same plane of rotation as that of my such that
(a)
(b) F
For static…
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