What is force?please explain!!
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Force is either a pull or push.
It causes motion.
In other words we can define it as every action which causes a motion is a kind of force.
It is the interaction between two objects which results in a force between them.
It is necessary for at least two objects to interact for a force to come into effect.
During interaction of two objects,force has been acted on the object that has moved. However, during the interaction of two objects force acts on both the objects.
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It causes motion.
In other words we can define it as every action which causes a motion is a kind of force.
It is the interaction between two objects which results in a force between them.
It is necessary for at least two objects to interact for a force to come into effect.
During interaction of two objects,force has been acted on the object that has moved. However, during the interaction of two objects force acts on both the objects.
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FORCE
We do a lot of activities in daylight pushing,things, pulling things, hitting a cricket ball,lifting something and so on.
Let us call some activities in our routine life.
☆ Opening add drawer of a table and then closing it.
☆ Taking off the cap from a pen to start writing.
☆ Dribbing a basketball or a volleyball.
☆ Moving a Shopping Cart.
There is something common in these activities. If we look carefully.
☆ We have to pull the drawer in the table to put the books in it and put it back.
☆ We have to pull the cap of the pen to open it.
☆ We have to put the ball to the ground to strike it.
☆ We have to put the shopping card to make it move.
It is this "push" or "pull" which is applied on a object that makes them move to change in direction or stop if in motion. This 'push' or 'pull' which is applied on a body to bring about some changes in its position and form is called force.
● Magnitude and direction of a force:
The harder you push or pull, the greater is the magnitude of the force. Sometimes a batsman is able to hit a ball hard scoring a six. At other times, the strength of his shot may not be enough and easily fielded. In the former case the magnitude of force is larger while that in the letter case is smaller. The strength of a force is expressed by its magnitude.
The SI unit of force is expressed by its magnitude. The SI unit of force is Newton (N).
The effect of force will change with the change in its magnitude or direction.
If you stand in front of a football, it will not start moving itself. You have to interact with the football by pushing or pulling it, that is by applying force on it, to make it move.
You can see from the above activity that for forces to come into play at least two objects must interact with each other.
● Balanced force :
Forces that are equal in magnitude but opposite in direction are balanced forces.
● Resultant force :
Force which causes some effect on the object is called the resultant force.
● Effects of Force :
When force is applied, it may have the following effects :
• Force can make a stationary object, or can change its position of rest.
• Force can change the speed of a moving object.
• Force can change the direction of motion of a moving object.
• Force can change the shape or size of an object.
TYPES OF FORCES
Forces can be classified as contact forces and noncontact forces.
● Contact Forces :
Forces that act on objects by coming in contact with them are called contact forces.
Contact force is are of two types :
• Muscular force :
The force is exerted by the muscles of your body and is called muscular force.
• Frictional Force :
When two objects are in contact with each other friction force is the force resisting the motion of the object.
● Non contact forces :
Forces that act on objects without coming in contact with them are called non contact forces.
Non contact force is are of three types :
•Magnatic Force :
If you play some pins on the table and bring a small magnet near the pins, you will find the pins jump and cling to the magnet. Observe that there is no contact between the pins and the magnet and still the magnet is able to pull the pins. Thus, magnetic force is a non contact force.
• Electrostatic Force :
The force exerted by a charged body on a uncharged body is known as electrostatic force.
• Gravitational Force :
Gravitational force is the force of attraction between particles of matter.
THANKS!!
We do a lot of activities in daylight pushing,things, pulling things, hitting a cricket ball,lifting something and so on.
Let us call some activities in our routine life.
☆ Opening add drawer of a table and then closing it.
☆ Taking off the cap from a pen to start writing.
☆ Dribbing a basketball or a volleyball.
☆ Moving a Shopping Cart.
There is something common in these activities. If we look carefully.
☆ We have to pull the drawer in the table to put the books in it and put it back.
☆ We have to pull the cap of the pen to open it.
☆ We have to put the ball to the ground to strike it.
☆ We have to put the shopping card to make it move.
It is this "push" or "pull" which is applied on a object that makes them move to change in direction or stop if in motion. This 'push' or 'pull' which is applied on a body to bring about some changes in its position and form is called force.
● Magnitude and direction of a force:
The harder you push or pull, the greater is the magnitude of the force. Sometimes a batsman is able to hit a ball hard scoring a six. At other times, the strength of his shot may not be enough and easily fielded. In the former case the magnitude of force is larger while that in the letter case is smaller. The strength of a force is expressed by its magnitude.
The SI unit of force is expressed by its magnitude. The SI unit of force is Newton (N).
The effect of force will change with the change in its magnitude or direction.
If you stand in front of a football, it will not start moving itself. You have to interact with the football by pushing or pulling it, that is by applying force on it, to make it move.
You can see from the above activity that for forces to come into play at least two objects must interact with each other.
● Balanced force :
Forces that are equal in magnitude but opposite in direction are balanced forces.
● Resultant force :
Force which causes some effect on the object is called the resultant force.
● Effects of Force :
When force is applied, it may have the following effects :
• Force can make a stationary object, or can change its position of rest.
• Force can change the speed of a moving object.
• Force can change the direction of motion of a moving object.
• Force can change the shape or size of an object.
TYPES OF FORCES
Forces can be classified as contact forces and noncontact forces.
● Contact Forces :
Forces that act on objects by coming in contact with them are called contact forces.
Contact force is are of two types :
• Muscular force :
The force is exerted by the muscles of your body and is called muscular force.
• Frictional Force :
When two objects are in contact with each other friction force is the force resisting the motion of the object.
● Non contact forces :
Forces that act on objects without coming in contact with them are called non contact forces.
Non contact force is are of three types :
•Magnatic Force :
If you play some pins on the table and bring a small magnet near the pins, you will find the pins jump and cling to the magnet. Observe that there is no contact between the pins and the magnet and still the magnet is able to pull the pins. Thus, magnetic force is a non contact force.
• Electrostatic Force :
The force exerted by a charged body on a uncharged body is known as electrostatic force.
• Gravitational Force :
Gravitational force is the force of attraction between particles of matter.
THANKS!!
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