Teaching CTET (Paper 1 & Paper 2) Mock Test Series 2025 Physics Laws of Motion Common forces in mechanics
When trying to start moving a heavy box, the friction involved is __________, while the friction when the box is already moving is __________. Using __________ on the floor can help reduce this friction.
1
rolling, static, sand
2
dynamic, static, water
3
static, sliding, grease
4
sliding, rolling, oil