engineering recuitment HPCL Junior Executive 2025 Mock Test Engineering Mechanics Kinematics and Kinetics
A body of mass 10 kg is initially at rest on a rough horizontal surface (Static coefficient of friction, μ = 0.2) and is acted upon by a 30 N pull applied horizontally. Find the change in kinetic energy of the body in 4 seconds. [g = 10 m/s2]
1
160 N-m
2
40 N-m
3
20 N-m
4
80 N-m