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Document Title
Fundamentals of Stress and Vibration Chapter Title
[A Practical guide for aspiring Designers / Analysts] 2. Engineering Mechanics

ˆ –Š‡ ƒ‰—Žƒ” ƒ ‡Ž‡”ƒ–‹‘ ™‡”‡ ‰‹˜‡ ƒ„‘—– –Š‡
Ǯ›-ƒš‹•ǯǡ ‹ –Š‡ Ǯ›œ-’Žƒ‡ǯǡ ƒ• •Š‘™ ‹ ȏ ‹‰
ʹǤͶͲȐǡ –Š‡ǡ ™‡ ‰‡– –Š‡ ‹‡”–‹ƒ –‡”• –‘ „‡ǣ

[Fig 2.40: an inclined rod accelerated about the 'y-axis']

2
2
1) dmαz = α dmz
2) dmαzy = α dmzy

If the angular acceleration were given about the ‘z-axis’, in the ‘yz-plane’, as shown in [Fig 2.41],
then, we get the inertia terms to be:

[Fig 2.41: an inclined rod accelerated about the 'z-axis']

2
2
1) dmαy = α dmy
2) dmαyz = α dmyz

Page 52 QP No. SSC/Q4401, Version 1.0, NSQF Level 7, Compliant with Aero and Auto Industries,