19-57. A solid ball with a mass m is thrown on the groundsuch that at the instant of contact it has an angular velocityw, and velocity components (vG),1 and (v),1 as shown. Ifthe ground is rough so no slipping occurs, determine thecomponents of the velocity of its mass center just afterimpact. The coefficient of restitution is e.(NG,(VGa

Given : The mass of solid ball = m The coefficient of restitution = e Solution : The coefficient…

Answered: 19-57. A solid ball with a mass m is…

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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19-35 The 10 kg bullet having of 800 m/s is fired into the edge of the 5 kg disk as shown. Determine the angular velocity of the disk just after the bullet becomes embedded into its edge. Also, calculate the angle the disk will swing when it stops. The disk is originally at rest. Neglect the mass of the rod AB.
15-102. The two spheres each have a mass of 3 kg and are attached to the rod of negligible mass. Determine the time the torque M = (8t) N·m where, is in seconds, must be applied to the rod so that each sphere attains a speed of 3 m/s starting from rest
19-26 The double pulley consists of two wheels which are attached to one another and turn at the same rate. The pulley has a mass of 15 kg and a radius of gyration of = 110 mm. if the block at A has a mass of 40 kg and the container at B has a mass of 85 kg, including its contents, determine the speed of the container when t = 3s after it is released from rest.
14-67. The assembly consists of two blocks A and B which have a mass of 20 kg and 30 kg, respectively. Determine the speed of each block when B descends 1.5 m. TI1c blocks are released from rest. Neglect the mass of the pulleys and cords
The 5 kg mass at point A is at rest on the spring with k = 300 N/m when t=0s. At this instant, 150 N force is applied to the cable. What is the velocity of mass when it has risen 0.3 m?
18-37 The spool has a mass of 20 kg and a radius of gyration of = 160 mm. if the 15 kg block A is released from rest, determine the velocity of the block when it descends 600 mm.
The plank AB has a mass of 7 kg. The rollers D and E are each of mass 5kg and are 0.5 m in diameter. The plank is released from rest with roller D under the end A and the roller E, under the mass center C. assuming no slipping, determine the velocity of the plank when roller E is under end B.
19-31 The 75 kg gymnast lets go of the horizontal bar in a fully stretched position A, rotating with an angular velocity of = 3 rad/s. estimate his angular velocity when he assumes a tucked position B. assume the gymnast at position A and B as a uniform slender rod and a uniform circular disk, respectively.
5. The 25-kg block AA is released from rest.
The two disks A and B have a mass of 3 kg and 5 kg, respectively. If they collide with the initial velocities shown, determine the velocity of A just after impact. The coefficient of restitution is e = 0.65. Use absolute value.
The 10-gg bullet having a velocity of vvv = 750 m/sm/s is fired into the edge of the 4-kgkg disk as shown. The disk is originally at rest. The rod ABAB has a mass of 3 kg Determine the magnitude of the angular velocity of the disk just after the bullet becomes embedded into its edge. Calculate the angle θθ the disk will swing when it stops.
The double pulley consists of two wheels which are attached to one another and turn at the same rate. The pulley has a mass of 15 kg and a radius of gyration kO=110mm. If the block at A has a mass of 40 kg, determine the speed of the block in 3 s after a constant force F=2kN is applied to the rope wrapped around the inner hub of the pulley. The block is originally at rest. Neglect the mass of the rope.

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