*19-48. The 4-lb rod AB is hanging in the vertical position.A 2-lb block, sliding on a smooth horizontal surface with avelocity of 12 ft/s, strikes the rod at its end B. Determinethe velocity of the block immediately after the collision. Thecoefficient of restitution between the block and the rod at Bis e = 0.8.3 ft12 ft/sB

Consider R as the length of the rod, r as the center of mass of the rod, vB as the velocity of the…

Answered: *19-48. The 4-lb rod AB is hanging in…

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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A 23-lb sphere A is held at the 60° angle shown and released. It strikes the 8-lb sphere B. The coefficient of restitution for this collision is e=0.60. Sphere B is attached to the end of a light rod that pivots freely about point O. If the spring of constant k = 89 lb/ft is initially unstretched, determine the maximum rotation angle of the light rod after impact. Answer: 0- 19" 60 29"- 29"
15-91. The 200-g billiard ball is moving with a speed of 2.5 m/s when it strikes the side of the pool table at A. If the coefficient of restitution between the ball and the side of the table is e=0.6, determine the speed of the ball just after striking the table twice, i.e., at A, then at B. Neglect the size of the ball. v = 2.5 m/s 45°
please solve with steps
15-83. The 10-lb collar B is at rest, and when it is in the position shown the spring is unstretched. If another 1-lb collar A strikes it so that B slides 4 ft on the smooth rod before momentarily stopping, determine the velocity of A just after impact, and the average force exerted between A and B during the impact if the impact occurs in 0.002 s The coefficient of restitution between A and B is e=0.5. k = 20 lb/ft ? 3 ft
15-89. Two smooth disks A and B have the initial velocities shown just before they collide. If they have masses ma = 4 kg and mg = 2 kg, determine their speeds just after impact. The coefficient of restitution is e = 0.8. VA = 15 m/s B Vg = 8 m/s
29
4. The 0.5-kg collar C starts from rest at A and slides with negligible friction on the fixed rod in the vertical plane. Determine the velocity v with which the collar strikes end B when acted upon by the 5 N force, which is constant in direction. Neglect the small dimensions of the collar. A 200 mm. 30⁰ 5 N B
the system shown starts from rest in the position shown. when block A hits the floor the cable between A and B becomes slack. Determine the velocity of B as it strikes A
None
The 0.7 lblb ball is shot from the spring device shown Determine the smallest stiffness k which is required to shoot the ball a maximum distance of 31 in. up the smooth plane after the spring is pushed back 3 in . and the ball is released from rest. The four cords C and plate P keep the spring compressed 2 in. when no load is on the plate.
An engineer is studying the impacts of frontal car collisions on the occupants.If a 1900-lb car with velocity vA = 30 mph collides head on with a 2800-lb car with velocity vb =20 mph, the coefficient of restitution of the impact is e = 0.15, then determine the velocities ofeach car after the collision. Assume car A and car B are on a flat surface, with car A traveling tothe right and car B traveling to the left.
15-67. The three balls each weigh 0.5 lb and have a coefficient of restitution of e = 0.85. If ball A is released from rest and strikes ball B and then ball B strikes ball C, determine the velocity of each ball after the second collision has occurred. The balls slide without friction. r= 3 ft

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