Sir Isaac Newton gave a mathematical relation to calculate the force of gravitation and this relation is known as the universal law of gravitation. It is a common belief that an apple fell on Newton’s head and he realized that gravity exists. This isn’t completely incorrect. But Newton already knew about the existence of gravity. Read more about Universal Law of Gravitation[…]
This is applicable only to a plane lamina. The moment of inertia of a plane lamina about an axis perpendicular to its plane is equal to the sum of the moments of inertia of the lamina about any two mutually perpendicular axes, passing in its own plane, intersecting each other at the point through which Read more about Perpendicular Axis Theorem[…]
The theorem determines the moment of inertia of a rigid body about any given axis, given that moment of inertia about the parallel axis through the centre of mass of an object and the perpendicular distance between the axes. The moment of inertia of a body about an axis is equal to its moment of Read more about Parallel Axis Theorem[…]
Friction is a force that tries to oppose motion between the two surfaces in placed contact. When we throw a ball on the floor it starting with some velocity. But once it is rolled ideally no force is acting in the direction of motion and according to Newton’s first law the ball should keep on Read more about Friction[…]
One of the fundamental conservation laws of physics is the law of conservation of angular momentum which states that the total angular momentum of a system is constant in both magnitude and direction, if the resultant external torque acting on the system is zero. During skating, if the skater folds his or her hands then Read more about Conservation of Angular Momentum[…]
When the mechanical properties of the system do not change then the system is in isolated state and it is called an isolated system. These systems are not interacting with environment and also called system with constant motion. The conservation laws are for isolated system because their properties are conserved and do not change. These laws Read more about Conservation of Momentum[…]
If a system has the capacity to do the work then it possesses energy. Work is the transfer of energy from one system to another system. This is a scalar quantity which is conserved in the isolated system according to the conservation of energy law. It is the basic concept of science. There are various Read more about Potential Energy[…]
The motion of an object has the energy that constitutes the Kinetic energy. The energy of any system is the capacity of doing any work. This is mainly classified into kinetic energy and potential energy. But it is always found according to its nature like when it is in form of heat then it’s a thermal energy, Read more about Kinetic Energy[…]
The motion of object in two dimensions is explained by two main principles that are kinematic principles and Newton’s laws of motion. The motion in two dimensions is called the motion of projectiles. The projectile object is one on which is moved under the force of gravity. Some examples of projectiles are like an object Read more about Projectile Motion[…]
Sir Isaac Newton gave his third law of motion in 17th century which came out as one of the most influential laws in this world. In the first two laws of motion we learnt about what is force and how can we calculate its magnitude. In the third law of motion we will get to Read more about Newton’s Third Law of Motion[…]