JEE Main 22 Jan 2026 Shift 2 Paper Solved Paper

Two masses m and 2 m are connected by a light string going over a pulley (disc) of mass 30 m with radius r=0.1m. The pulley is mounted in a vertical plane and it is free to rotate about its axis. The 2 m mass is released from rest and its speed when it has descended through a height of 3.6 m is ____ m∕s. (Assume string does not slip and g=10m∕s2 )