3 Answers | Add Yours
As you have started this discussion in the Physics group, we should look at the effects of a force on a body from the relevant point of view.
Force is equal to mass*acceleration
Whenever a force acts on a body the body is accelerated in the direction of the force by a value inversely proportional to the mass.
Or acceleration = force / mass.
The acceleration may be too small to be noticeable but there is no denying that there is one.
Also, there is no acceleration when there is a counter-acting force which is equal to the force applied.
It is also true that a force can act on a body without any visible effect. For example, when a boulder rests on the ground, gravity is acting upon it but no effect is seen because the normal force is also acting on it to keep it in equilibrium.
Sometimes, a force can act on an object but be too small to change anything about that body. An example would be a grasshopper jumping off that boulder -- it would exert force but the force would be too small to overcome the other forces acting on the boulder.
For instance, a force can change the kinematics of a body (a force can stop or move a body, changing the speed of the body, by increasing or decreasing it, or th force can change the direction of motion of that body).
Also, a force can change the original shape and size of a body.
As conclusion, any kind of action, of pull or push type, that has as result the changing of velocity of the body, is called force.
We’ve answered 319,631 questions. We can answer yours, too.Ask a question