Home » Ask & Discuss » Physics
« Back to Discussion

General Physics

New kid on the Block

Joined:	21 Apr 2011
Post:	1

21 Apr 2011 18:57:37 IST

0 People liked this

249

whats newtons law of motion

Engineering Entrance , Medical Entrance , AIPMT , JEE Main , AIIMS , JEE Advanced , Physics , General

whats newtons law of motion

Comments (3)

kartikshrivastava

Hot goIITian

Joined: 13 Jun 2010

Posts: 114

21 Apr 2011 19:46:54 IST

Like 0 people liked this

hey man just refer to ncert book for this......

Vikram Saxena

Blazing goIITian

Joined: 1 Apr 2007

Posts: 4025

22 Apr 2011 18:33:40 IST

Like 0 people liked this

Newton's laws of motion are three physical laws that form the basis for classical mechanics. They describe the relationship between the forces acting on a body and its motion due to those forces. They have been expressed in several different ways over nearly three centuries, and can be summarized as follows:

First law: Every body remains in a state of constant velocity unless acted upon by an external unbalanced force. This means that in the absence of a non-zero net force, the center of mass of a body either remains at rest, or moves at a constant velocity.
Second law: A body of mass m subject to a net force F undergoes an acceleration a that has the same direction as the force and a magnitude that is directly proportional to the force and inversely proportional to the mass, i.e., F = ma. Alternatively, the total force applied on a body is equal to the time derivative of linear momentum of the body.
Third law: The mutual forces of action and reaction between two bodies are equal, opposite and collinear. This means that whenever a first body exerts a force F on a second body, the second body exerts a force −F on the first body. F and −F are equal in magnitude and opposite in direction. This law is sometimes referred to as the action-reaction law, with F called the "action" and −F the "reaction". The action and the reaction are simultaneous.

Palanichamy.M

Scorching goIITian

Joined: 12 Apr 2011

Posts: 290

22 Apr 2011 18:36:12 IST

Like 0 people liked this

First law about the inebility of Matter to change its state (of Rest, motion and DIRECTION) INERTIA:

Every body continues in its state of REST or constant velocity in a STRIGHT LINE unless acted by an external force. No particle can change its direction of motion by itself.

Second law: tells about the quantity of acceleration produced by the force

F = ma.

Third Law tells about the Action and Reaction

That is About the give and take philosophy of the Ultimate NATURE !

WE CAN NOT LIFT OUR SELVES, When we apply force on water, water helps us move forward. We call this swimming. Only external force can work creatively. Pushing a car to move. Internal force destructive? Bomb!

For every action there is an equal RE action

Quick Reply

Reply

	Some HTML allowed.
	Keep your comments above the belt or risk having them deleted.
	Signup for a avatar to have your pictures show up by your comment
	If Members see a thread that violates the Posting Rules, bring it to the attention of the Moderator Team