257_Dynamics 11ed Manual

257_Dynamics 11ed Manual - k . The attached spring has an...

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Engineering Mechanics - Dynamics Chapter 14 Units Used: kip 10 3 lb = Given: W 4000 lb = v 0 55 ft s = g 32.2 ft s 2 = Solution: 1 2 W g v 0 2 Area 0 = Area 1 2 W g v 0 2 = Area 187.888 kip ft = We must produce this much work with the barrels. Assume that 5 ft < x < 15 ft Area 2f t ( ) 9 kip () 3 f t ( ) 18 kip () + x 5f t ( ) 27 kip () + = x Area 72 kip ft 27 kip 5f t + = x 9.292 ft = Check that the assumption is corrrect! Problem 14-22 The collar has a mass M and is supported on the rod having a coefficient of kinetic friction
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Unformatted text preview: k . The attached spring has an unstretched length l and a stiffness k . Determine the speed of the collar after the applied force F causes it to be displaced a distance s = s 1 from point A . When s = 0 the collar is held at rest. Given: M 30 kg = k 0.4 = a 0.5 m = 45 deg = F 200 N = s 1 1.5 m = l 0.2 m = g 9.81 m s 2 = k 50 N m = 255...
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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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