JEE Main Physics question
A block A of mass 7 kg is placed on a frictionless table. A thread tied to it passes over a frictionless pulley and carries a body B of mass 3 kg at the other end. The acceleration of the system is (given g = 10 ms⁻²)
Answer: (B)
Solution
a = /+ = (3×10)/(7+3) = 30/10 = 3 ms⁻².