Force is an influence tending to change the motion of a body or produce motion or stress in a stationary body.
Effect of force:
1.Force change the motion of a body:- force change the motion of body that are already in motion and produce motion in a stationary body. Example a car moving on a road suddenly hit behind by a truck, you will notice the tendency of the car motion increase. the force applied by the truck affect the motion of the car. A stationary body hit behind by a moving body, the position of the stationary body changes.
2.Force change the direction of both stationary body and body in motion:- Newton's second law state that the rate of change of momentum of a body is directly proportional to the applied force and take place in the direction in which the force acts.
3.Frictional force:- is a force that oppose the motion of one body over the other.
Effect of frictional force:
a.It leads to wasting of energy, when two surrounding forces move over each other, heat is generated as a result of friction. the energy required to turn the machine, will be converted heat energy which reduces the energy output.
b.It leads to wearing away of the surfaces in contact.
4.Gravitational force field:- Gravitational force field causes a body thrown up to fall back on the ground.
Force is a vector and it's definition is: An influence which causes an object to accelerate.
A force can have certain effects towards an object:
-Accelerate it( including negative acceleration)
-Cause Internal Stress(in which deforms it)
Isaac Newton defines force as mass times acceleration.
The only way to do that is to physically take it away from the Earth. As long as the object remains on the Earth, you can apply additional forces to it, to combine in various ways with the force of gravity and make the object move as you want it to, but there's nothing you can do to change the force of gravity on it.
Obviously you can't have both an unstoppable force and an immovable object. If the force moves the object, then the object isn't unmovable. If the force doesn't move it, then the force isn't unstoppable.
The upward force acting on an object is the normal force. It is equal in magnitude, but opposite in direction to the object's weight.
Normal force can act on an object
the negative effects of force are:- *force can stop a moving object. *force can produce heat. *force is not desirable
An unbalanced force can completely destroy the object (depending upon its mass and power of force) or can gradually move it or it can also have no effect on the object.
Assuming that the force is great enough to overcome static friction; the force will change the momentum of the object.
applying a force to an object, (pushing, pulling, hitting, kicking etc.) can change its speed, its direction and its shape.
force can change the shape and size of an object force can change the direction of an moving object force can make a stationary object move and make a moving object move faster force can slow down or completely stop a moving object
slow the object down or speed it up
Isaac Newton defines force as mass times acceleration.
When an unbalanced force acts upon an object it will accelerate.
1:Force can change the shape of an object2:Force can cause an object that is not moving to start moving 3: Force can cause an object to turn around or spin
When a force acts upon an object, and that force is great enough to overcome initial friction, the object will undergo an acceleration until the force is removed or is balanced by another force.
It depends: if the object is free to move then it will be accelerated (moved). If the object is not free to move, then it will just sit there.
there are not 4 but 3 effects of electric current - heating effect, magnetic effect and chemical effect of electric current