1) A truck that is stopped on the road has to be pushed hard to get into motion.
When the truck is moving a little, it can be moved faster with a smaller /less
push. Why?
Answers
Answer:
When we push a truck parked along the roadside, then the road implements a static friction force in the opposite direction of force implemented on the truck to oppose the motion of the truck. The static friction is flexible in nature, hence, the road allows only the required amount of friction force to keep the truck at rest. If we apply more force, the road applies more friction force. Hence the friction force cancels out the force applied. In short we can explain it as follows
The truck has a large mass therefore the static friction between the truck and the road is very high.
To move the car, we have to apply force more than static friction.
Therefore, when someone pushes the truck and the truck does not move,
Hence the applied force gets cancel by the frictional force which is equal in magnitude but in opposite direction.
Explanation:
Explanation:
A truck that is stopped on the road has to be pushed hard to get into motion
