Question

Ends of three light identical rods each of length l are connected to a light pivot that enables them to rotate in any direction. At the other ends of the rods, three particles A, B and C of masses m, 2m and 3m respectively are affixed. Initially the rods are coplanar, angle between any two is 120 and the particles are at rest. Now the particle C is given a velocity u perpendicular to the rod connected to it and in the plane of the rods as shown in the figure. Ignore gravitational interaction between the particles. What are the moduli of acceleration of the particles A, B and C immediately after the particle C is given velocity u?

          Ends of three light identical rods each of length l are connected to a light pivot that enables them to rotate in any direction. At the other ends of the rods, three particles A, B and C of masses m, 2m and 3m respectively are affixed. Initially the rods are coplanar, angle between any two is 120 and the particles are at rest. Now the particle C is given a velocity u perpendicular to the rod connected to it and in the plane of the rods as shown in the figure. Ignore gravitational interaction between the particles. What are the moduli of acceleration of the particles A, B and C immediately after the particle C is given velocity u?

Added by Sukumar C.

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