Newton's laws of motion JKSSB FAA

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Newton's laws of motion are a set of three physical laws that describe the relationship between a body and the forces acting upon it. They were first described by Sir Isaac Newton in his book "Philosophiæ Naturalis Principia Mathematica" in 1687.

1st Law: An object at rest tends to stay at rest and an object in motion tends to stay in motion with a constant velocity, unless acted upon by an external force.

2nd Law: The acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to its mass. (F = ma)

3rd Law: For every action, there is an equal and opposite reaction.

These laws help to explain the behavior of objects in motion and are fundamental to our understanding of mechanics.

 

1st Law (Law of Inertia): An object at rest tends to stay at rest and an object in motion tends to stay in motion with a constant velocity, unless acted upon by an external force. This law states that an object will remain at rest or in motion at a constant velocity unless acted upon by an external force. In other words, if an object is not being pushed or pulled, it will not change its motion. This is known as the principle of inertia.

2nd Law (Law of Acceleration): The acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to its mass. The equation for this is (F = ma), where F is the net force acting on an object, m is the mass of the object, and a is the acceleration of the object. This law states that the more force that is applied to an object, the greater the acceleration will be. The greater the mass of an object, the smaller the acceleration will be.

3rd Law (Law of Action and Reaction): For every action, there is an equal and opposite reaction. This law states that for every force that is exerted on an object, there is an equal and opposite force that is exerted in the opposite direction. This is known as the principle of action and reaction, and is often referred to as Newton's third law of motion.

These laws are fundamental to our understanding of mechanics and are commonly used in physics and engineering to analyze and understand the motion of objects. They are also widely used in the design and analysis of mechanical systems, such as engines and machines.

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