Types of Contact & Non-Contact Force with examples...!
Answers
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Force➫ Any interaction that when unopposed will change the motion of an object.
♦ It's SI unit is Newton (N).
♦ It has both magnitude & direction, making it a vector quantity.
➊❭ Effects 0f Force are:-
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❱ It can make a stationary object move or change its position of rest.
♦Ex:- When you kick a stationary Football it will in motion.
❱ It can change the speed of a moving object.
♦Ex:- When goalkeeper applies force to stop the football.
❱ It can change the direction of motion of a moving object.
♦Ex:- When a batsman hits a ball.
❱ It can change the shape or size of an object.
♦Ex:- When you squeeze a sponge.
❷❭ Types 0f Force are:-
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❲1❳ Contact Force➫ A force that acts only when it is in contact with an object.
♦Ex:- Pushing a car up a hill.
❱ Types 0f Contact Force:-
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❱ Muscular➾ The force which is exerted by the muscle of your body.
♦Ex:- When you lift your School's Bag
❱ Frictional➾ The force generated by two surfaces that contacts & slide against each other.
♦Ex:- A person sliding down a slide.
❲2❳ Non-Contact Force➫ A force that acts on an object without being in contact with it.
♦Ex:- Leaves falling from a tree.
❱ Types 0f Non-Contact Force:-
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❱ Gravitational➾ A force that attracts any two objects with mass.
♦Ex:- Leaves falling from trees.
❱ Magnetic➾ The force that arises due to the motion of charged particle within the magnetic field.
♦Ex:- Iron pin attracted to magnet.
❱ Electrostatic➾ The attraction or repulsion of particles or objects because of their electric charge.
♦Ex:- When you rub a comb in hair.
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Thanks...✊
contact force has two types :-
1. musucalar force -example.. walking, lifting a backet, moving a book, etc.
2. frictional force - example..when a log of wood moves on a flat surface it slide due to fricton, when a wheel or a log of wood rolls over a flat surface due to friction.
non contact force has three types:-
1. magnetic force - example.. when you bring a bar magnet near iron clips, the iron clips moves from their original position towards the bar magnet underthe influence of magnetic force. it is seen that magnetic force act when the two object they is bar magnet and iron clips are not in contact with each other. so, the magnetic force is the example of non- contact force
2. electrostatic force -example.. when you bring a plastic comb closed to a piece of paper nothing happens. when you rub a plastic comb several times in dry hairs and bring it near small pieces of paper, they get attracted towards comb. this is because on rubbing comb get charged.
3. gravitational force -example.. when we throw an object upwards it falls down towards the earth. since, the ball fall downward there must be a force acting on it this force due to the attraction between the earth or the object .