Question

Two identical lightweight arms are mounted so that they can revolve in a horizontal plane around a common axis. Two balls of masses mm and M=2mM=2m are fixed to the ends of the arms and connected with a light compressed spring (see the top view in (Figure 1)). When the spring is released, the arms are pushed apart, rotate in opposite directions, and finally collide.

What is the angle through which the arm with the larger ball turns before the balls collide?

What is the angle through which the arm with the smaller ball turns before the balls collide?

A Review Constants Periodic Table Two identical lightweight arms are mounted so that they can revolve in a horizontal plane around a common axis. Two balls of masses m and M = 2m are fixed to the ends of the arms and connected with a light compressed spring (see the top view in (Figure 1)). When the spring is released, the arms are pushed apart, rotate in opposite directions, and finally collide. Part Indicate assumptions that you made. We assume that the arms are much lighter than the balls so their O contribution to the momentum may be ignored, and that the length of the arms is much greater than the dimensions of the ball and the spring. Figure 1 of 1 > We assume that the arms are much lighter than the balls so their O contribution to the momentum may be ignored, and that the length of the arms is comparable to the dimensions of the ball and the spring. We assume that the arms exert the same force to each ball in opposite directions so their contribution to the momentum cancels each other, and that the length of the arms is much greater than the dimensions of the ball and the spring, M We assume that the arms exert the same force to each ball in opposite directions so their contribution to the momentum cancels each other, and that the length of the arms is comparable to the dimensions of the ball and the spring. Submit Request Answer

Answer 1

Part-C we will consider arm is massless so momentum of arm will become negligible and dimension of arm is greater than dimension of spring and ball

M = 2m OM رد؟ w MY mu [V - Var] for mass M! Clarger ball) - Voel = V1 + V2 Depec o, = 21 X Y [Q 1200] vt ar = 3r SO) and t = 2 1 1 so) and for smaller mass (m) 02 = 21 x 2V => [02 3V and part-C option -1 CSS With Om Sosono

Hence option 1 is correct