Concept explainers
Distinguish between linear momentum and
To explain: The differences between linear momentum and the angular momentum.
Explanation of Solution
Introduction:
Momentum of the object is basically mass of an object in motion. Every moving object will have momentum. Momentum is a vector quantity that is it has both magnitude and direction. There are two types of momentum namely angular and linear momentum.
Angular Momentum:
When an object is moving in a circular path, the object is said to be in rotational motion and the momentum possessed by an object in rotational motion is called as angular momentum.
Consider an object is moving with the angular velocity
The relation for the angular momentum
Here,
The object’s angular momentum is a vector quantity acts in a direction at
The SI unit of angular momentum is
Example: The planets movement around the sun in circular path.
Linear Momentum:
When an object is moving in a linear or straight path, the object is said to be in linear motion and the momentum possessed by an object in linear motion is called as linear momentum.
Consider an object of mass
The relation for the linear momentum
The object’s linear momentum of an object is a vector quantity acts in a direction of the velocity vector.
The SI unit of linear momentum is
Example: A car moving in a straight road.
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Conceptual Physics: The High School Physics Program
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