I. Contact forces :
1) Muscular force:
Digging bore well
2) Frictional force:
3) Normal force:
4) Tension:
II. Forces at distance (Field Forces)
1) Magnetic force:
2) Electrostatic force:
Charged balloon
3) Gravitational force:
Report: Forces are two types based on contact or non-contact between objects.
I. Contact Forces : Force which results when there is a direct physical contact between two interacting objects is known as contact force. Contact forces are four types. They are :
1. Muscular Force: The force which we exert by using our body muscles is known as muscular force.
2. Frictional Force: Friction is the resistance to the movement of a body over the surface of another body.
3. Normal Force: The force that a solid surface exerts on any object in the normal direction is called normal force.
4. Tension: The lightness of slope or string when we try to stretch a rope or string is called tension.
II. Forces at distance (Field forces): The force which occurs without any physical con¬tact between two objects is known as a force at distance or field force. Forces at distance are three types. They are:
1. Magnetic Force : The force existing between two magnetic poles of two different magnets is called magnetic force. The force is also exists between magnet and magnetic material.
2. Electrostatic Force : The force exerted by a charged body on another charged body is known as electrostatic force.
3. Gravitational Force : The force of attraction exists between any two bodies (or masses) everywhere in the universe is known as gravitational force.
