Sphere A has a weight of 30 lb and a radius of 4 in., while sphere B has a weight of 5 lb and a radius of 3 in. If the spheres are traveling initially along the parallel paths with the speeds shown, determine the velocities of the spheres immediately after impact. Specify the angles A and B with respect to the x-axis made by the rebound velocity vectors. The coefficient of restitution is 0.35 and friction is neglected. Enter positive numbers for the angles 8. Answers: VA = A VB = i i 12 ft/sec 39 ft/sec B 4" ft/sec, A= ft/sec, B= i i O

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Forced undamped vibrations

In mechanical engineering, vibration is expressed as the term that occurs due to an object's backward and forward movement about a point of equilibrium. Generally, there are three types of vibrations which are,