railway RRB JE (CBT I + CBT II) Mock Test 2024 Engineering Mechanics Equilibrium and Friction Friction
A body of mass 3 kg is kept stationary by pressing to a vertical wall by a force of 200 N. the coefficient of friction between wall and body is 0.3. then the frictional force is equal to:(g = 10 m/s2)
1
30 N
2
60 N
3
3 N
4
6 N