Two particles of masses m and 2m are placed on a smooth horizonttal table. A string, which joins these two masses, hangs over the edge supporting a pulley, which suspends a particle of mass 3m, as shown in Fig. 5-40. The pulley has negligible mass. The two parts of the string on the table are parallel and perpendicular to the edge of the table. The hanging parts of the string are vertical. Find the acceleration of the particle of mass 3m.

Explanation

`5.2" m"//"s"^(2)`