You might already be familiar with the laws of motion by Sir Isaac Newton. It has always been part of your science lesson from elementary to college. You are probably wondering why Newton’s laws of motion are being given a lot of importance and attention over the years. The underlying reason is that these laws are the basis of one classical mechanics, one of the major fields of physics. Mechanics pertains to the study of the way that the things move or not as forces intervene on them.
Additionally, there are many books that tackle the subject. Some of the books really center on the topic while others are mention slightly mention it, for example, the fundamental laws of motion by Griffen, Neil’s book From Science to Spirituality: Finding Spirituality in Science has made quite an impact in showing how science and religion can agree with one another.
What could be the exact definition and the laws of the famous Laws of Motion?
The laws of motion by Newton describe the behavior of massive objects as well as the way that they engage with one another. Though Newton’s laws seem rather clear to all of us already, they were considered groundbreaking over three thousand years ago. These laws refer to the movement through an inertial frame of reference of massive objects, often referred to as a Newtonian reference frame, but Newton actually never defined this very reference frame. A 3D coordinate system that is either static or in constant linear movement can be defined as an inertial reference frame, it is not moving or spinning. Newton discovered that three simple rules could characterize motion within such an inertial reference frame.
The first law of motion states that any subject will stay in a straight line at rest or just in uniform movement until coerced by the intervention of an external force to change its status. Usually, this is regarded as the concept of inertia. The primary idea here is that when there is no net force acting on an object, if all the outside forces cancel each other out, therefore the object will retain a fixed velocity. In events that velocity is zero, and then the object will remain at rest. The velocity will only alter if there is an external force used to the object.
The second law of motion describes the way that when exposed to an external force, the velocity of an object is altered. The law describes a force to be equivalent to momentum shift per time adjustment. Sir Isaac Newton also flourished mathematics’ calculus, and the “changes” presented in this law are most correctly described in the differential forms. Moreover, this particular law presents that the force (F) is the product of the constant mass of the object and the acceleration of it; hence, the creation of the formula F=m*a.
The third law of motion claims there’s an equal and opposite reaction to any movement (force). Otherwise stated, if object A applies force on object B, object B also applies force on object A with the same amount of force exerted. Note that the forces are applied on various surfaces. To describe the formation of lift by a wing and the development of thrust by a jet engine, this particular law can be utilized.
Example of the First Law of Motion
Ben’s cup of tea is resting on the kitchen counter while he is checking the fridge. Gravity’s force that is pulling down is balance by the kitchen counter’s force pushing up on the cup of tea. If Ben will move his tea, he should exert an external force to disturb the balance. But, thank God that Ben is strong enough to exert the same force so that he can enjoy drinking his morning tea!
Example of the Second Law of Motion
What could be the accelerations of the two objects that weighs 3kg and 6kg if there is a net force of 12 N exerted on them? The resulting acceleration of the 3kg object is 4 m/s² while the acceleration experienced by the 6kg object is 2 m/s².
Example of the Third Law of Motion
Anna is walking at the park. While she is walking, she is also pushing the ground backward. As a result, the ground also pushes Anna forward in return; hence, making her walk.
Newton’s laws of motion are truly significant not just in science but in real life!
Alex Writes 