what is angular momentum
Answers
Answer:
In physics, angular momentum (rarely, moment of momentum or rotational momentum) is the rotational equivalent of linear momentum. It is an important quantity in physics because it is a conserved quantity—the total angular momentum of a closed system remains constant.
Explanation:
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Answer:
Momentum is the product of mass and the velocity of the object. Any object moving with mass possesses momentum. The only difference in angular momentum is that it deals with rotating or spinning objects. So is it the rotational equivalent of linear momentum?
If you try to get on a bicycle and try to balance without a kickstand you are probably going to fall off. But once you start pedalling, these wheels pick up angular momentum. They are going to resist change, thereby balancing gets easier.
Angular momentum is defined as:
The property of any rotating object given by moment of inertia times angular velocity.
It is the property of a rotating body given by the product of the moment of inertia and the angular velocity of the rotating object. It is a vector quantity, which implies that here along with magnitude, the direction is also considered.
Angular momentum can be experienced by an object in two situations. They are:
Point object: The object accelerating around a fixed point. For example, Earth revolving around the sun. Here the angular momentum is given by:
L⃗ =r×p⃗
Where,
L⃗ is the angular velocity
r is the radius (distance between the object and the fixed point about which it revolves)
p⃗ is the linear momentum.
Extended object: The object, which is rotating about a fixed point. For example, Earth rotates about its axis. Here the angular momentum is given by:
L⃗ =I×ω⃗
Where,
L⃗ is the angular momentum.
I is the rotational inertia.
ω⃗ is the angular velocity.