736_Dynamics 11ed Manual

736_Dynamics 11ed Manual - Engineering Mechanics - Dynamics...

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Unformatted text preview: Engineering Mechanics - Dynamics 1 ⎡ 1 γ ( 2a) ⎤ 2 2 ⎥ ( 2a) ω = γ 2a h g⎦ ⎢ 2 ⎣ 12 h= Chapter 21 1 2⎛ ω a⎜ 6 ⎝g 2⎞ ⎟ ⎠ h = 2.24 in *Problem 21-28 The assembly consists of a rod AB of mass mAB which is connected to link OA and the collar at B by ball-and-socket joints. When θ = 0 and y = y1, the system is at rest, the spring is unstretched, and a couple moment M, is applied to the link at O. Determine the angular velocity of the link at the instant θ = 90°. Neglect the mass of the link. Units Used: 3 kN = 10 N Given: mAB = 4 kg M = 7Nm a = 200 mm y1 = 600 mm k=2 kN m Solution: 2 L= I= 2 a + a + y1 1 3 mAB L 2 2 δ = L − y1 Guess Given ω=1 mAB g a 2 rad s + M( 90 deg) = 1 2 2 Iω + 1 2 kδ 734 2 ...
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This note was uploaded on 08/16/2011 for the course EGN 3321 taught by Professor Christianfeldt during the Spring '08 term at University of Central Florida.

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