Basic Laws of Physics

Introduction to Basic Physics Laws:

There are several laws in physics but the Newton’s three laws of  motion are the basic laws of physics because these laws describes the motion of any object which is the major and the most important aspect in physics which is associated with any body. These laws are as follows:

Please express your views of this topic Newton Law of Motion by commenting on blog.

Newton's Laws of Motion


Newton's First Law of Motion:

It states that if a body is in a state of uniform motion then the body tends to remain in this state of motion and if a body is in the status of rest then it remains in it unless an external force is applied in both the condition to the body. This law is easily shown in the fig.1. The first law is also recognize as an essentially property of the body named as the inertia thus this law is some times synonyms as the law of inertia.


Newton's Second Law of Motion:

This law is the most powerful law out of the three Newton's laws of motion due to its applications in the quantitative calculations of dynamics. This law says that the rate of change of the linear momentum of a body is equal to the force exerted on it. This law also gives us a relationship between the mass of an object and the acceleration of the object such as:

F = dp / dt

F = d (mv) / dt

F = m dv / dt  (because mass of a body is constant)

F = ma          (because dv / dt = a, acceleration)

Here both the acceleration and the force are the vector quantities and the direction of the force is same as that of the acceleration. Fig.2 shows the simple structure of the second law of motion.


Newton's Third Law of Motion:

This is the most simpler and important law which says that for every action of the body applied on the other body there is an equal and opposite reaction of the other body on it. This law explains the many general life aspects like what is responsible for the step off of a boat onto the bank of a lake.

Is this topic Density Problems hard for you? Watch out for my coming posts.

Conclusion for Basic Physics Laws


As per the discussion we made on basic laws of physics, we came to know the basic few principles of physics which governs into our daily life and its varied uses.