GATE Physics Exam > GATE Physics Videos > Quantum Mechanics for GATE > Lecture 4: Angular Momentum
Lecture 4: Angular Momentum Video Lecture | Quantum Mechanics for GATE - GATE Physics
FAQs on Lecture 4: Angular Momentum Video Lecture - Quantum Mechanics for GATE - GATE Physics
| 1. What is angular momentum in physics? |  |
Ans. Angular momentum in physics is a vector quantity that represents the rotational motion of an object. It is defined as the product of the moment of inertia of the object and its angular velocity.
| 2. How is angular momentum calculated? | |
Ans. Angular momentum is calculated by multiplying the moment of inertia (I) of an object by its angular velocity (ω). The formula for angular momentum is L = Iω.
| 3. What is the conservation of angular momentum? | |
Ans. The conservation of angular momentum states that the total angular momentum of a system remains constant if no external torques are acting on the system. This principle is similar to the conservation of linear momentum.
| 4. How does angular momentum relate to torque? | |
Ans. Torque is the rate of change of angular momentum, according to Newton's second law for rotational motion. The relationship between torque (τ), angular momentum (L), and time (t) is given by the equation τ = dL/dt.
| 5. Can angular momentum be negative? | |
Ans. Yes, angular momentum can be negative. The direction of angular momentum is determined by the direction of the angular velocity vector. If the object is rotating in the opposite direction, the angular momentum can be negative.
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