19–41. Tests of impact on the fixed crash dummy areconducted using the 300-lb ram that is released from rest ate = 30°, and allowed to fall and strike the dummy ate = 90°. If the coefficient of restitution between thedummy and the ram is e = 0.4, determine the angle e towhich the ram will rebound before momentarily comingto rest.10 ft10 ft

Consider H as the angular momentum of the rod, W is the weight of the ram, v1 is the initial…

Answered: 19–41. Tests of impact on the fixed…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Compute the final velocities v₁' and v₂' after collision of the two cylinders which slide on the smooth horizontal shaft. The velocities are positive if to the right, negative if to the left. The coefficient of restitution is e=0.77. Assime v₁ = 30 ft/sec, v₂= 4 ft/sec, W₁ = 8 lb, W₂ = 16 lb. Answers: V₁' = V₂¹ = V1 W₁ i i V2 W₂ ft/sec ft/sec
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Q13. As shown in the image below, the 54 kg-crate is initially at rest, and at a distance d= 6.0 m from the top of the spring. Then it slides down the inclined plane. If the coefficient of kinetic friction between the crate and the inclined plane is uk = 0.22, determine the compression of the spring, x, when the crate momentarily stops (as the spring reaches maximum compression). The spring has spring constant k = 1.3 kN/m and initially the spring is unstretched. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point, and proper SI unit. Take g = 9.81 m/s². d k 45° Your Answer: Answer units
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