Hey guys, from here we are going to start with the most important era of physics which was dominated by greatest physicist of all time can you guess, who is he? Yes, he is nothing but Sir Isaac Newton. He was the greatest physicist and mathematician of all time. If you remove his contribution from physics, it will be most difficult for us to understand the modern era of mechanics. So let’s learn more about Sir Isaac Newton’s contribution, starting with laws of motion.
Before Newton’s laws, Sir Aristotle said that force is required to displace the object from one place to another. The more illustration of the same is studied by Sir Newton and he proposed the laws of motion to explain the concept of mechanics in more details.
Newton’s first law states that ‘an object remains in state of rest or state of uniform motion along straight line unless and external unbalanced force acts on it.’
First law of motion explain us the idea of inertia, that unbalanced force is necessary to change the state of object from rest to motion or from motion to rest. This applied force should overcome inertia of object so change the state of object.