Quiz : How Much Do You Know About Angular Momentum?

2.

Angular momentum has both magnitude and

Path
Direction
Quantity
Distribution

Correct Answer

A. Direction

Explanation

Angular momentum is a vector quantity, which means it has both magnitude and direction. The magnitude of angular momentum represents the amount of rotational motion an object possesses, while the direction indicates the axis around which the rotation occurs. Therefore, the correct answer is "direction."

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3.

Angular momentum is usually denoted by

M
L
A
K

Correct Answer

A. L

Explanation

The correct answer is L. Angular momentum is usually denoted by the symbol L. This symbol is commonly used in physics to represent the rotational motion of an object. It is a vector quantity that depends on the mass, velocity, and distance from the axis of rotation. The symbol M is typically used to represent mass, A is used for acceleration, and K is often used for kinetic energy. Therefore, L is the correct symbol for angular momentum.

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4.

Angular momentum is the product of inertia and

Acceleration
Angular velocity
Force
Torque

Correct Answer

A. Angular velocity

Explanation

Angular momentum is a measure of the rotational motion of an object. It is defined as the product of the moment of inertia and the angular velocity of the object. Moment of inertia represents how mass is distributed around the axis of rotation, while angular velocity measures the rate at which an object rotates around that axis. Therefore, the correct answer is angular velocity, as it is directly related to the angular momentum of the object.

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5.

Angular momentum is what type of quantity?

Vector
Scalar
Linear
Rotational

Correct Answer

A. Vector

Explanation

Angular momentum is a vector quantity because it has both magnitude and direction. It is the rotational equivalent of linear momentum and depends on the position, mass, and velocity of an object rotating around an axis. The direction of the angular momentum vector is perpendicular to the plane of rotation and follows the right-hand rule. Therefore, it can be represented by a vector arrow pointing along the axis of rotation.

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6.

Both angular velocity and inertia of moment must be at the same rotational line and

Axis
Level
Point
Path

Correct Answer

A. Axis

Explanation

Angular velocity and inertia of moment must be at the same rotational axis because angular velocity is a vector quantity that describes the rate at which an object rotates around an axis, while inertia of moment is a scalar quantity that measures an object's resistance to changes in its rotational motion around a specific axis. Therefore, both quantities need to be referenced to the same axis in order to accurately describe the rotational motion of an object.

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7.

The total angular momentum of an object remains constant unless acted upon by an external

Force
Acceleration
Velocity
Torque

Correct Answer

A. Force

Explanation

The total angular momentum of an object remains constant unless acted upon by an external force. This means that if there are no external forces acting on the object, the total angular momentum will remain the same. Angular momentum is a measure of the rotational motion of an object and is determined by its mass, shape, and rotational speed. If an external force is applied to the object, it can change the object's angular momentum by causing it to accelerate or decelerate its rotational motion. Therefore, force is the correct answer as it is the external factor that can affect the total angular momentum of an object.

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8.

Angular momentum belongs to which groups?

Derived quantities
Fundamental quantities
Scalar quantities
Force

Correct Answer

A. Derived quantities

Explanation

Angular momentum is a physical quantity that is derived from other fundamental quantities such as mass, velocity, and distance. It is not a fundamental quantity itself, like force or scalar quantities. Therefore, it belongs to the group of derived quantities.

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9.

Which of the following laws explains that angular moment is conserved in an orbit?

Newton's law
Kepler 's law
Hooke's law
Pascal's law

Correct Answer

A. Kepler 's law

Explanation

Kepler's law explains that angular momentum is conserved in an orbit. Kepler's laws of planetary motion describe the motion of planets around the sun. The second law states that the line connecting a planet to the sun sweeps out equal areas in equal times, which implies that the planet's angular momentum is conserved. This means that as a planet moves closer to the sun, it speeds up to maintain a constant angular momentum, and as it moves farther away, it slows down. Therefore, Kepler's law is the correct answer to the question.

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10.

Angular momentum exhibits which type of motion?

Translational
Rectilinear
Harmonic motion
Rotational

Correct Answer

A. Rotational

Explanation

Angular momentum exhibits rotational motion. In physics, angular momentum is a vector quantity that represents the rotational inertia of an object in motion. It depends on both the mass of the object and its rotational velocity. When an object is rotating about an axis, it possesses angular momentum, which is a measure of its tendency to continue rotating. This type of motion is distinct from translational motion, which involves movement along a straight path, as well as other types of motion like rectilinear (motion along a straight line) and harmonic motion (repetitive motion back and forth around a central position). Therefore, angular momentum specifically pertains to rotational motion.

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Quiz : How Much Do You Know About Angular Momentum?

The formula for angular momentum is

Quiz Preview

Angular momentum has both magnitude and

Angular momentum is usually denoted by

Angular momentum is the product of inertia and

Angular momentum is what type of quantity?

Both angular velocity and inertia of moment must be at the same rotational line and

The total angular momentum of an object remains constant unless acted upon by an external

Angular momentum belongs to which groups?

Which of the following laws explains that angular moment is conserved in an orbit?

Angular momentum exhibits which type of motion?