*15-68. Plates A and B each have a mass of 4 kg and are restricted to move along the smooth guides. If thecoefficient of restitution between the plates is e = 0.7, determine (a) the speed of both plates just aftercollision and (b) the maximum compression of the spring. Plate A has a velocity of 4 m/s just before strikingB. Plate B is originally at rest and the spring is unstretched.Problem 15-680.1 m0.1 mk = 500 N/m0.5 mBA4 m/s

The objective of this problem is to find the speed of both plates just after collision and the…

Answered: *15-68. Plates A and B each have a mass…

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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15-61. The 15-kg block A has a velocity v = 10 m/s when it is s = 4 m from the 10-kg block B. If the unstretched spring has a stiffness k = 1000 Nm, determine the maximum compression of the spring due to the collision. Take e = 0.6, and for block A, Mk = 0.3. Assume block B is smooth. WWW -k = 1000 N/m B 10 m/s
17-78. Two cylinders A and B, having a weight of 10 lb and 5 Ib, respectively, are attached to the ends of a cord which passes over a 3-lb pulley (disk). If the cylinders are released from rest, determine their speed in t = 0.5 s. The cord does not slip on the pulley. Neglect the mass of the cord. Suggestion: Analyze the "system" consisting of both the cylinders and the pulley. 0.75 ft
*14-76. The spring has a stiffness k = 50 N/m and an unstretched length of 0.3 m. If it is attached to the 2-kg smooth collar and the collar is released from rest at A (0 = 0°), determine the speed of the collar when 0 = 60°. The motion occurs in the horizontal plane. Neglect the size %3D of the collar. 2 m- k = 50 N/m
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18-22. If the 50-lb bucket, C, is released from rest, determine its velocity after it has fallen a distance of 10 ft. The windlass A can be considered as a 30-lb cylinder, while the spokes are slender rods, each having a weight of 2 lb. Neglect the pulley's weight. -з8— 3 ft 4 ft 0.5 ft- K0.5 ft
*15-68. Plates A and B each have a mass of 4 kg and are restricted to move along the smooth guides. If the coefficient of restitution between the plates is e = 0.7, determine (a) the speed of both plates just after collision and (b) the maximum compression of the spring. Plate A has a velocity of 4 m/s just before striking B. Plate B is originally at rest and the spring is unstretched. Problem 15-68 0.1 m 0.1 m MM k=500 N/m -0.5 m- B C A 4 m/s
The 100-kg crate shown in Fig. 15-4a is originally at rest on the smooth horizontal surface. If a towing force of 200 N, acting at an angle of 45°, is applied for 10 s, determine the final velocity and the normal force which the surface exerts on the crate during this time interval. 200 N HINT: The problem can be solved using the principle of impulse and momentum since it involves fore, velacity, and time. First draw the FBD. (a)
17-78. Two cylinders A and B, having a weight of 10 lb and 5 lb, respectively, are attached to the ends of a cord which passes over a 3-lb pulley (disk). If the cylinders are released from rest, determine their speed in t= 0.5 s. The cord does not slip on the pulley. Neglect the mass of the cord. Suggestion: Analyze the "system" consisting of both the cylinders and the pulley. 0.75 ft
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