What is force ◉ When any action(pull or push) which body moves forward or backwards is called force Force is a vector quantity, meaning that it has a magnitude and a direction. The direction of a force is the line from the point of application of the force to the point where the force is being applied. If a force is applied on a body, a force of equal magnitude and opposite direction acts on the body. The direction of the force on a body is called the reaction. Force is a vector quantity, meaning that it has a magnitude and a direction. The direction of a force is the line from the point of application of the force to the point where the force is being applied. If a force is applied on a body, a force of equal magnitude and opposite direction acts on the body. The direction of the force on a body is called the reaction.
◉ A force can produce an effect this ● ● ● ● ●
1. It can change the state of rest or motion. 2. force can stop a moving body. 3. it can increase or decrease the speed of a body. 4. Force change the shape and size of a body, when force is balanced. 5. It can change the direction of the motion of a moving body.
◉ Force is an agent that produce acceleration. ◉ Newton second law gives us the relation between force, mass and acceleration.
Force formula:- this force formula from newton 2nd law. ● f = ma ● f = force ● m = Mass of body ● a = Acceleration of body ◉ Force is a vector quantity. because it has both direction and magnitude. ◉ SI unit is newton & CGS unit is dyne.
● 1 newton = 1 kg/m² ● 1 newton = 100000 dyne ● 1 newton = 0.001 Kilonewton(KN) ● 1 newton = 7.233 Poundal(pdl)
Basic Forces in nature.
There are four basic forces in nature. They are strong force, weak force, electromagnetic force, and gravity. The strong force holds protons and neutrons together in the nucleus. The electromagnetic force attracts the opposite electrical charges and repels like electrical charges. The weak force is responsible for radioactive decay. Gravity is the force that attracts all objects to Earth. ● ● ● ●
1. Gravitational forces 2. Weak Nuclear forces 3. Electromagnetic forces 4. Strong Nuclear forces
Types of forces Balanced Force:- When the net force on a body is equal to zero then it's called Balanced force. Unbalanced Force:- When the net force on a body is not equal to zero then it's called Balanced force. This force produces the motion of an object and changes its position. Check :- force calculator