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| Q.60 | 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] | |
| Ans | 1. 160 N-m | |
| 2. 80 N-m | ||
| 3. 40 N-m | ||
| 4. 20 N-m |
Correct Ans: 2
