In this video, we will talk about force. Force is a push and pull. The unit of force is Newton.
It is named after an English scientist, Sir Isaac Newton. So, what can force do? A force can make an object move. A force can change the direction of a moving object.
A force can make a moving object to speed up. A force can stop a moving object. A force can change the shape of an object. Force can be classified into two categories, contact force and non-contact force. Contact force is a type of force that needs the objects to touch for the force to work, like opening a door, kicking a ball, dribbling a tennis ball, and pressing a button.
Non-contact force is a type of force that can happen without the objects touching. These are magnetic force, electrostatic force, and gravitational force. Magnetic force, the push or pull exerted by a magnet. A magnet can attract magnetic objects. A compass is used to find directions.
Electrostatic force. The force that exists between all charged particles. Lightning Hair standing up Next, gravitational force the force that attracts objects towards the earth's center.
The moon moves around the earth while planets in the solar system move around the sun. All of these happen because of gravity. Water from the mountain falls down due to the effect of gravity.
Snow falls down during winter because of gravity. Leaves fall down from a tree due to gravity.