Classical Mechanics Video Lecture | Mechanics & General Properties of Matter - Physics

Ans. Classical mechanics is a branch of physics that deals with the motion of objects and the forces acting upon them. It provides a mathematical description of how objects move and interact under the influence of forces. It is based on Isaac Newton's laws of motion and is applicable to everyday objects at speeds much slower than the speed of light.

Ans. The three laws of motion in classical mechanics, also known as Newton's laws of motion, are: 1. Newton's First Law of Motion: An object at rest will remain at rest, and an object in motion will continue to move with a constant velocity unless acted upon by an external force. 2. Newton's Second Law of Motion: The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. This is expressed by the equation F = ma, where F is the net force, m is the mass of the object, and a is the acceleration. 3. Newton's Third Law of Motion: For every action, there is an equal and opposite reaction. When one object exerts a force on a second object, the second object exerts a force of equal magnitude in the opposite direction on the first object.

Ans. Classical mechanics and quantum mechanics are two different branches of physics that describe the behavior of objects at different scales. Classical mechanics is applicable to everyday objects and can accurately predict their motion and behavior. It is based on deterministic principles, where the future state of a system can be precisely determined given its initial conditions. On the other hand, quantum mechanics deals with the behavior of particles at the atomic and subatomic level. It introduces probabilistic principles, where the future state of a system is described by a wavefunction that gives the probability distribution of possible outcomes. Quantum mechanics also incorporates wave-particle duality and the uncertainty principle, which are not present in classical mechanics.

Ans. Classical mechanics has numerous real-life applications, including: 1. Projectile motion: Understanding the motion of objects thrown or launched into the air, such as footballs, baseballs, or rockets. 2. Planetary motion: Describing the motion of planets, moons, and other celestial bodies in the solar system. 3. Car mechanics: Analyzing the motion of vehicles, including braking, acceleration, and turning. 4. Structural engineering: Designing and analyzing the stability and strength of buildings, bridges, and other structures. 5. Fluid mechanics: Studying the motion of fluids, such as water flow in pipes or air flow around an airplane wing.

Ans. Classical mechanics serves as a foundation for other branches of physics and provides a framework for understanding and analyzing physical phenomena. It relates to other branches of physics in the following ways: 1. Thermodynamics: Classical mechanics forms the basis for understanding the behavior of macroscopic systems in thermodynamics, such as the motion and interaction of molecules in gases. 2. Electromagnetism: Classical mechanics provides the framework for understanding the motion of charged particles in electric and magnetic fields, as described by Maxwell's equations. 3. Relativity: Classical mechanics is a subset of the more general theory of relativity, which describes the behavior of objects at high speeds or in strong gravitational fields. The principles of classical mechanics hold true in situations where relativistic effects are negligible.