User talk:Faisalqureshi11

Force
Force: Force is a physical quality which causes a motion in a body or which opposes the motion of a body which changes the direction of motion of a body. Faisalqureshi11 (talk) 04:10, 2 September 2015 (UTC)

Inertia
Inertia: The resistance or opposition offered by a body to change its state of rest or uniform motion or direction of motion unless some external force acts on it, It is called inertia. Note: Inertia is an inherent property of all the objects. Inertia of a body is directly proportional to its mass. Faisalqureshi11 (talk) 04:15, 2 September 2015 (UTC)

Type of Inertia
There are three types of Inertia. A) Inertia of rest B) Inertia of motion C) Inertia of direction

A) Inertia of rest: The resistance or opposition offered by a body to change its state of rest is called Inertia of rest.

Examples of Inertia of Rest: a) When a bus suddenly starts moving forward, the passengers of the bus fall backward. This is because the lower part of the bodies of the passengers being in contact with the floor of the bus come in motion along with where as the upper parts of the bodies remain at rest due to Inertia of Rest. Hence they fall backward.

b) Place a one rupee coin on a piece of smooth cardboard covering a glass. Strike the card board with a finger. The cardboard flies away and the coin falls into the glass. This happens on account of Inertia of Rest.

B) Inertia of Motion: The resistance or opposition offered by a body to change its uniform motion is called Inertia of Motion.

Examples of Inertia of Motion: a) The passengers fall forward when a fast moving bus stops suddenly. This is because the lower part of the bodies of the passengers come into rest along with bus while the upper part of the bodies, due to Inertia of Motion, continue to move forward.

b) A person falls forward while getting down from a moving bus or train. This is because as his feet touch on the ground. The lower part of his body comes to rest. On the other hand, the upper part remains in motion due to Inertia of Motion and hence he falls forward.

C) Inertia of Direction: A body moving in a particular direction can never change its direction by itself unless a force is applied on it. This property of the body is called inertia of Direction.

Examples of Inertia of Direction : a) Consider a stone tied with a string moves in a horizontal circle. If suddenly, the string breaks during the motion, the stone will fly off tangentially at that point of the circle due to Inertia of Direction.

b) If a bus takes a turn along a curve road, the passengers experience a force acting away from the centre of the curved road. This is due to the tendency of the passengers to continue moving along a straight path. Faisalqureshi11 (talk) 04:50, 2 September 2015 (UTC)