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Can someone help me? On a large horizontal frictionless circular track, radius R, lie two small balls of masses m and M, free to slide on the track. Between the two balls is squeezed a spring, which, however, is not attached to the balls. The two balls are held together by a string. (a) If the string breaks, the compressed spring (assumed massless) shoots off the two balls in opposite directions; the spring itself is left behind. The balls collide when they meet again on the track ( Fig. 35). Where does this collision take place? Express the answer in terms of the angle, in rad, through which ball M travels. ( b) The potential energy initially stored in the spring was U0 • Find the time it takes after the string breaks for the collision to take place. (c) Assuming the collision to be perfectly elastic and headon, where will the balls collide again after the first collision?

Can someone help me?

On a large horizontal frictionless circular track, radius R, lie two small balls of masses m and M, free to slide on the track. Between the two balls is squeezed a spring, which, however, is not attached to the balls. The two balls are held together by a string. (a) If the string breaks, the compressed spring (assumed massless) shoots off the two balls in opposite directions; the spring itself is left behind. The balls collide when they meet again on the track ( Fig. 35). Where does this collision take place? Express the answer in terms of the angle, in rad, through which ball M travels. ( b) The potential energy initially stored in the spring was U0 • Find the time it takes after the string breaks for the collision to take place. (c) Assuming the collision to be perfectly elastic and headon, where will the balls collide again after the first collision?

Grade:12th pass

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