state gov UP Police Head Operator (Radio Cadre) Mock Test Physics Laws of Motion Common forces in mechanics
On applying a small pushing force on a heavy box placed on a rough floor, it does not move. This is because:
1
The frictional force between the surface of the box and the floor balances the pushing force
2
There is a strong attractive force between the surface of the box and the floor
3
The gravitational force of the floor keeps the box fixed
4
The adhesive forces exerted on the box by the floor are