# Two identical metal spheres suspended by vertical cords, initially touch each other as shown in fig. Sphere  is pulled to the left to a height  and released. After swinging down it collides elastically with sphere  The height undergone by sphere will be a) b) Less than c) more than d) Zero

## Question ID - 100524 :- Two identical metal spheres suspended by vertical cords, initially touch each other as shown in fig. Sphere  is pulled to the left to a height  and released. After swinging down it collides elastically with sphere  The height undergone by sphere will be a) b) Less than c) more than d) Zero

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Answer Key : (a) -
 (a) The whole of the energy of  will be transferred to So  will rise to the same height

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A uniform solid sphere of radius  is rolling on a smooth horizontal surface with velocity  and angular velocity . The sphere collides with a sharp edge on the wall as shown in Figure. The coefficient of friction between the sphere and the edge . Just after the collision the angular velocity of the sphere becomes equal to zero. The linear velocity of the sphere just after the collision is equal to

 a) b) c) d)

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