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How a body can have angular momentum when it is moving in straight line?
A body can have angular momentum when moving in a straight line if it is rotating about a different axis or point. The angular momentum is a measure of the body's rotational motion and is independent of its linear motion. So, even if the body is moving straight, the angular momentum can still be present due to its rotation.
What is the definition of translatory motion with diagrams?
Translatory motion is the type of motion in which an object moves along a straight line. This motion involves all parts of the object moving in the same direction by the same distance. In a diagram, translatory motion can be represented by showing an object changing its position along a single axis without any rotation or angular displacement.
Why is angular momentum of a body is equal to the product of its moment of inertia and angular velocity?
The angular momentum of a rotating body is equal to the product of its moment of inertia (a measure of its resistance to angular acceleration) and its angular velocity (rate of rotation) because angular momentum is a measure of how much rotational motion a body possesses, and both moment of inertia and angular velocity contribute to this rotational motion. Just like how linear momentum is the product of mass and velocity in linear motion, the product of moment of inertia and angular velocity gives the rotational equivalent of momentum.
When there is no external force acting on a body , which physical quantity is conserved?
Angular Momentum. The conserved quantity we are investigating is called angular momentum. The symbol for angular momentum is the letter L. Just as linear momentum is conserved when there is no net external forces, angular momentum is constant or conserved when the net torque is zero.
Is the direction of angular velocity same as that of angular momentum when agular velocity is decreasing?
No, the direction of angular velocity and angular momentum are not always the same. Angular momentum is defined as the cross product of the position vector and linear momentum, so the direction of angular momentum depends on both the direction of linear momentum and the position vector. Therefore, when angular velocity is decreasing, the direction of angular momentum may change depending on the specific conditions of the system.
