Newtons Law of Motion - Eduauraa

This blog will study Newton's three laws with examples to help the students to score a good mark in their science subject.

Newton’s law of motion consists of three laws that indicate the motion of an object and the force applied to it.

Newton’s 3 laws of motion are discussed in detail.  Newton’s 1st, 2nd, and 3rd laws are especially important topics of CBSE class 11 physical science subject.

Understanding Law of motion topic will strengthen the base of students for further studies in the science field.

Definition

Newton’s first law of motion states that if an object is in a resting stage or moving at a constant speed in a straight line, it will remain in a resting stage or keep moving at a constant speed unless it is hit by an external force. This theory of Newton is called the law of inertia.  Famous Galileo had first invented the theory of inertia law. The total quantity of motion contained in an object is called momentum. Momentum is the product of mass, and velocity Momentum is a vector quantity.

No stationary object can move by its power and also can not move without any external, imbalanced force. The mathematical expression is Fg=W=mg. the weight of an object is a long-range force due to gravity. It is directly proportional to the mass(m) and gravitational acceleration. 

Example of Newton's first law

• When the wind is causing a change in the motion of a kite.
• When a rocket is being launched into the atmosphere
• An astronaut will observe no change in the direction or the speed of a screwdriver in space because, in space, there exists no external force. These Newton's laws examples are especially important for class 11 students to understand the concept of Newton's 1st law of motion very clearly.

Newton’s Second law of motion.

The 2nd law of motion states that the rate of momentum change is directly proportional to the force applied on and the change follows the direction of applied force. The acceleration of an object depends on two variables, and the net force is acting upon the mass of an object.

Acceleration directly depends on the net force and inversely depends on the mass of the object.

As the net force is increased, then the acceleration is also increased.  The decrease in mass of the object indicates the increase in the acceleration. 

The mathematical interpretation is F= am, where F is an external unbalanced force, a is acceleration, and m is the momentum of an object.  The equation means the acceleration is directly proportional to the external force and inversely related to the mass of the object. One Newton is measured by the amount of force required to give 1 kg mass and 1m/s^2.

Scientist Isaac newton’s laws of motion theory are explained in a broader way later in the science stream. 1 newton= 1 kg*1m/s^2

Examples of Newton’s 2nd law of motion

• Kicking a ball
• Catching a ball in hand
• Pushing a car
• Two people are walking together.
• Two people were pushing a table.
• Playing golf

Newton’s third law of motion

If object A creates a force on object B, object B must return a force of equal magnitude and opposite direction back on object A. This law represents a certain symmetry in nature: forces always occur in pairs, and one body cannot exert a force on another without experiencing a force itself. For every action, there is an equal and opposite reaction. Force means the pull or pushes causing an object to move from its first place.

Whenever two objects, A and B, interact with each other, they create action and reaction on each other. Suppose one person is sitting on a chair. That means the person is putting downward force on the chair, and the chair is giving upward force on the body.  

Two forces are being produced due to the interaction. One force is on the chair, and another force is on the body.  Newton’s laws examples are explained with individual proof to make the topic interesting. Newton’s 1st, 2nd and third laws with perfect examples cover the law of motion topic of class 11 CBSE science.

The two forces are equal in magnitude but opposite in direction. 

FA= -FB denotes the numeric value of the force of object A equals the numeric value of object B's force. Still, the forces are opposite in direction denoted by the negative sign.

The examples of Newton's third law

When a person jumps, that means his legs create a force on the ground, and the ground also creates the same amount of opposite force on the legs, which enables the person to be in the air.

A horse is pulling a cart.

Plat the game tug of war.

I was bouncing a ball on the floor.

As a professor pace in front of a whiteboard, he exerts a force backward on the floor. ...

A car accelerates forward because the ground pushes forward on the drive wheels in reaction to the drive wheels pushing backward on the ground.

Conclusion

Students must know what Newton's 1st, 2nd and 3rd laws of motion are very well to understand the law of motion topic very well.

So, from the portion mentioned above, class eleven students will get an overview of the three laws of motion

Syllabus to prepare their respective subjects.

This mentioned Syllabus is the most updated, and it indicates that the Syllabus is indeed very dynamic and student-friendly. So, it will not be difficult for students to score excellent marks if he follows the Syllabus properly.

The blog has discussed Newton’s 3 laws of motion in detail, including all the chapters and topics.