Difference Between Linear and Angular momentum
Difference between Linear and angular momentum is discussed below:
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Linear Momentum |
Angular Momentum |
|---|---|
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It is the tendency of the mass of an object to continue moving in a straight path. |
It is the tendency of the mass of an object to continue to rotate. |
|
Linear momentum is parallel to v. |
It is perpendicular to both v and r. |
|
Magnitude is the mass times its speed. |
Magnitude is the rotational mass times its angular speed. |
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There is a net force required to change it. |
There is net torque required to change it. |
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If the mass is greater means that greater force is needed to change the momentum. |
If the moment of inertia is greater means that greater torque is needed to change the momentum. |
How to find the Momentum from Velocity?
We can find momentum from velocity by multiplying it with mass i.e. Momentum = mass × velocity. Momentum is a vector quantity in physics that is a property of motion and is obtained by calculating the product of mass and velocity. Momentum always remains conserved in a closed space.
Velocity is defined as the rate of change of position as a function of time and frame of reference and is also called instantaneous velocity to distinguish it from the average velocity. Some applications may require an average velocity of an object, i.e., a constant velocity that gives a variable velocity and a net displacement equal to a variable velocity in the same time interval v(t) for some time Δt.
The average speed can be calculated as v = Δx/ Δt.
The average velocity is always less than or equal to the average velocity of the object. This can be done by recognizing that distance always increases strictly, but displacement can increase or decrease in magnitude as well as in direction.
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