JEE Main Physics question
Two bodies of mass 3 kg and 4 kg are suspended at the ends of a massless string passing over a frictionless pulley. The acceleration of the system is (g = 9.8 m/s²)
Answer: (C)
Solution
a = (m₂−m₁)g/(m₁+m₂) = (4−3)(9.8)/7 = 9.8/7 = 1.4 m/s².