400 N
400 N / 10cm2 = 2000 N / 50cm2
400 N 400 N / 10cm2 = 2000 N / 50cm2
If you mean in a car engine, it's because an explosion (even a controlled one of the gasoline/petrol being ignited by a spark plug) creates a spherical force. So, the cylindrical piston is the same shape as the explosion, and gets the most efficient pressure distribution. A rectangular piston would get force in the middle, but not the edges, and it would take more force to do the same job. Also, the rectangular piston would wear down faster because of the uneven force being applied.
Yes. The definition of a force is a push or a pull. So, as long as the object moves, a force has indeed acted upon it.
object B moves
An object, in itself, does not have any force. It can exert a force on another object, such as gravitational or electro-magnetic attraction or repulsion, or from impact. However, in all such cases, you require two (or more) objects: one object, in isolation, exerts no force.
You apply a force to the object.You apply a force to the object.You apply a force to the object.You apply a force to the object.
400 N 400 N / 10cm2 = 2000 N / 50cm2
Adesive force.
Apply some force to the object.
10
you can push the object or you can pull the object
You apply a force to an object. The object must move in the same way as the applied force
Centripetal force is a force that keeps an object inwards, in the case of circular motion or similar.
acceleration
The object will remain the same regardless of the amount of force you apply on it.
If you apply force to an object, you accelerate it. If you apply the force in the direction that the object is moving, you speed it up. If you apply it in the opposite direction, you slow it down. If you apply the force in another direction than the object is moving in you will change the direction of the objects motion. The amount of acceleration is given by a = F/m where a is acceleration, F is force and m is the mass of the object.
You reduce the diameter of the small piston. Or reduce the diameter and increase the travel of the small piston if you want the large piston to maintain it's previous range of travel.