railway RRB JE (CBT I + CBT II) Mock Test 2024 Engineering Mechanics Kinematics and Kinetics Work Power and Energy
A brick weighing 50 kg is at rest on the floor without any movement. Then what will be normal force applied and the work done by it?
1
490 N and 0 J
2
0 N and 0 J
3
490 N and 490 J
4
0 N and 490 J