1.what are the different types of force ?
2.what is the unit of force ?
3.Explain different types of force ?
Answers
Answer:
1. Basically, there are two types of forces, contact forces, and non-contact forces. Gravitational forces, electric forces, magnetic forces, nuclear forces, frictional forces are some examples of force.
2. Newton
The International System of Units (SI) is widely used for trade, science and engineering. The SI unit of force is the newton, symbol N. The base units relevant to force are: The metre, unit of length — symbol m. The kilogram, unit of mass — symbol kg.
3. Types of forces with examples
Basically, forces are of two types:
Contact forces
Non-contact forces or At a distance forces
Contact forces
Those forces which represent the result of physical contact between two objects, where one of the objects exerts force on the other.
examples of contact forces
Stretching of the spring of a balance
the pushing of a pram
kicking of a football
Pushing the door
Hitting the ball etc are some examples of contact forces.
5 Types of contact forces
some types of contact forces are given in the list below:
Applied force
Normal force
Frictional force
Tension force
Air resistance force
Spring force
Applied force
Force due to the action of muscles is called applied force. It is also called muscular force.
Normal force
It is a contact interaction force between surfaces. It always acts perpendicular to the surfaces and out of the surface. It comes from the microscopic deformation of molecules modeling a system of springs.
Normal force examples
Frictional force:
Frictional force comes from interactions with a surface as an object moves or tries to move relative to the surface.
Tension force:
An applied force where the force is applied through a string, cable, rope, etc..
Note that a tension force can only pull, it cannot push. We usually assume the tension in a cable is the same everywhere in the cable.
Air resistance force:
The force that acts in a direction opposite motion through a gas is called air resistance force. It comes from cumulative interaction with air molecules. It increases as the velocity through the gas increases. It also increases as the area normal to the direction of motion increases.
Spring force:
Spring force comes from the displacement of molecules. It is always opposite the displacement of spring.
Noncontact forces
Those forces which do not involve physical contact between the two objects but act through the space between the two.
Non-contact force examples
Examples of non-contact or action at a distance forces, which are given in the list given below:
Gravitational force
Electromagnetic force
Weak nuclear force
Strong nuclear force
The gravitational force of attraction:
Attractive force exerting between two objects is called gravitational force. It originates with the presence of matter.
Electromagnetic force:
The electromagnetic force which includes basic electric and magnetic interactions and is responsible for the binding of atoms and the structure of solids.
Weak nuclear force:
The weak nuclear force which causes certain radioactive decay processes and certain reactions among the most fundamental particles.
Strong nuclear force:
The strong force which operates among the fundamental particles and is responsible for binding the nucleus together.
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Explanation:
1.Types of Forces
Contact Forces Action-at-a-Distance Forces. Frictional Force Gravitational Force.
Tension Force Electrical Force
Normal Force Magnetic Force
Air Resistance Force
2.The International System of Units (SI) is widely used for trade, science and engineering. The SI unit of force is the newton, symbol N. The base units relevant to force are: The metre, unit of length — symbol m. The kilogram, unit of mass — symbol kg.
3.A force is a push or pull acting upon an object as a result of its interaction with another object. There are a variety of types of forces.
...
Types of Forces.
Contact Forces Action-at-a-Distance Forces
Frictional Force Gravitational Force
Tension Force Electrical Force
Normal Force Magnetic Force
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