Question

Obtain information about commonly used gadgets or devices which are based on the principles of Newton's laws of motion.

Answer 1

Newton’s laws of motion deals with the interaction of mass and force on an object. There are three fundamental laws that guide the motion of objects. The application of Newton’s laws can be seen in everyday life quite easily. Go through each law and find the examples of them in your daily life.

Complete step by step answer:

English physicist and mathematician gave the postulates of laws of motion in his famous book Philosophiae Naturalis Principia Mathematica in 1687.

We will go through each one of those three laws and find examples of commonly used gadgets which are based on the principles of Newton’s laws of motion.

Newton’s First Law:
If a body is at rest or moving at a constant speed in a straight line, it will remain at rest or continue moving in a straight line.

Example:
Spinning top is one of the oldest toys for kids. When the spinning top is spinning, it does not slow down unless it is stopped by force. So, it is a direct example of Newton’s first law. The motion dies down due to the frictional force in the air.

Newton’s Second Law:
Rate of change of momentum of the body is directly proportional to the force acting on it.

Example:
If we apply the same force to a car and a truck, then it is harder to get the velocity of the truck equal to the car. Mass of the truck is more than the mass of the car, as a result it is harder to change the momentum of the truck using the same force.

Newton’s Third Law:
For every action there is an equal and opposite reaction.

Example:
When you pull a fixed object with a force, you experience the same force on the hand. The working principle of a rocket is also based on the third law.

Note:
Vehicles are one of the examples which uses all three laws of motion clearly. If we don’t exert force on the car, it will not move. That is Newton’s first law. Car moves due to the frictional force on the tires. The rate of change of momentum is equal to the total frictional force on the car. The frictional force acts due to the Normal force of the surface. Normal force is the reaction force due to the weight of the car.