15-83. The 10-lb collar B is at rest, and when it is in theposition shown the spring is unstretched. If another 1-lbcollar A strikes it so that B slides 4 ft on the smooth rodbefore momentarily stopping, determine the velocity of Ajust after impact, and the average force exerted between Aand B during the impact if the impact occurs in 0.002 sThe coefficient of restitution between A and B is e=0.5.k = 20 lb/ft ?3 ft

Given Data: The weight of collar A is wA = 1 lb. The weight of collar B is wB = 10 lb. The…

Answered: 15-83. The 10-lb collar B is at rest,…

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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Each of the two elastic rubber bands of the slingshot has an unstretched length of 200 mm. If they are pulled back to the position shown and released from rest, determine the maximum height the 25-g pellet will reach if it is fired vertically upward. Neglect the mass of the rubber bands and the change in elevation of the pellet while it is constrained by the rubber bands. Each rubber band has a stiffness k = 50 N/m.
The 4-kg box slides on the smooth surface and has a velocity of 15 m/s. If it strikes the smooth plate, which has a weight of 2 kg and is held in position by an unstretched spring of stiffness k = 600 N/m, determine the maximum compression imparted to the spring. Take e = 0.7 between the box and the plate.
The 15 lb suitcase is released from rest at C. After it slides down the smooth ramp, it strikes the 10 lbsuitcase B, which is originally at rest. If the coefficient of restitution between the suitcase is e = 0.3 and thecoefficient of kinetic friction between the floor DE and each suitcase if 0.4, determinea. Velocities of A and B just after the impactb. Distance B slides before coming to rest.
The spring is placed between the wall and the 10-kg block. If the block is subjected to aforce of F = 500 N, determine its velocity when s = 0.5 m. When s = 0, the block is at restand the spring is uncompressed. The contact surface is smooth.
5. The 25-kg block AA is released from rest.
P13-2. The 10-kg block is subjected to the forces shown.In each case, determine its velocity at s=8m if v=3m/sat s=0. Motion occurs to the right.
Q2: The 0.5-kg cylinder A is released from rest from the position shown and drops the distance h; = 0.8 m. It then collides with the 0.4-kg block B; the coeffi- cient of restitution is e = 0.8. Determine the maxi- mum downward displacement ks of block B. Negleet all friction and assume that block B is ini- tially held in place by a hidden mechanism until the collision begins. The two springs of modulus % = 400 N/m are initially unstretched, and the dis- tanced = 1.0m.
When the 1.8-kg block is in the position shown, the attached springis undeformed. If the block is released from rest in this position, determine itsvelocity when it hits the floor.
14-76. The 4-kg smooth collar has a speed of 3 m/ s when it is at s = 0. Determine the maximum distance s it travels before it stops momentarily. The spring has an unstretched length of l m
The small collr of mass m = 0.59 kg is eleased from rest at A and slides down the curved rod in the vertical plane with negligible friciton. Find the velocity of the collar as it strikes the base at B.
If the hydraulic cylinder BE exerts a vertical force of F = 1.5 kNon the platform, determine the force developed in links AB and CD at the instant Ѳ= 90°. The platform is at rest when Ѳ= 45°. Neglect the mass of the links and the platform. The 200-kg crate does not slip on the platform.
The collar has a mass of 2 kg and is attached to the light spring, which has a stiffness of 30 N∕m and an un- stretched length of 1.5 m. The collar is released from rest at A and slides up the smooth rod under the action of the con- stant 50-N force. Calculate the velocity v of the collar as it passes position B. Use point A as datum.

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