Define the following?
1) friction
2) electrostatic force
3) gravitational force
Answers
Answer:
Friction is a force between two surfaces that are sliding, or trying to slide, across each other. For example, when you try to push a book along the floor, friction makes this difficult. Friction always works in the direction opposite to the direction in which the object is moving, or trying to move.
The electrostatic force is an attractive and repulsive force between particles are caused due to their electric charges. The electric force between stationary charged body is conventionally known as the electrostatic force. It is also referred to as Columb's force.
Answer:
Friction - Friction is the contact force which always act opposite to the direction of force applied by an moving object. For example - frictional force helps us to stop when we are moving.
Electrostatic force - Force exerted by a charged body on another charged or uncharged body is called electrostatic force. For example - Charged balloons stick on the wall surface when they are rubbed on head.
Gravitational force - It is the non contact force of attraction which attracts all the objects towards the gravity of earth. The force of gravity has a unique property to attract or pull all the objects towards earth. For example - falling of leaves, flowing water of river.