#1
A rotating object has angular momentum pointing in which direction?
Opposite to its axis of rotation.
Along its axis of rotation.
Perpendicular to its axis of rotation.
Toward its axis of rotation.
#2
Which of the following is a unit of angular momentum?
Joule
Newton
Kilogram meter per second
Watt
#3
If the net external torque acting on a system is zero, what can be said about the angular momentum of the system?
It decreases.
It remains constant.
It increases.
It becomes zero.
#4
Which of the following quantities is analogous to linear velocity in rotational motion?
Angular velocity
Torque
Moment of inertia
Angular momentum
#5
What is the unit of angular velocity?
Radians per second
Meters per second squared
Kilograms per meter
Newton-meters
#6
Which of the following is a correct statement about angular momentum?
Angular momentum is a scalar quantity.
Angular momentum depends on the point about which rotation occurs.
Angular momentum is conserved only in linear motion.
Angular momentum is not affected by rotational speed.
#7
Which of the following equations represents the correct relationship between torque (τ), moment of inertia (I), and angular acceleration (α)?
τ = I/α
τ = I * α
τ = α/I
τ = I + α
#8
Which of the following statements best describes the conservation of angular momentum?
Angular momentum is always conserved in any type of motion.
Angular momentum is only conserved in rotational motion with no external torque.
Angular momentum is conserved only in linear motion.
Angular momentum is conserved in both linear and rotational motion.
#9
What does the moment of inertia measure in rotational motion?
The amount of rotational force applied
The resistance of an object to angular acceleration
The speed of rotation
The distance from the axis of rotation to the point where force is applied
#10
Which of the following is a valid expression for the angular momentum of a point mass rotating about an axis?
L = m * v
L = m * r
L = m * v * r
L = m * v^2
#11
What happens to the angular momentum of a system if the moment of inertia decreases?
Angular momentum decreases.
Angular momentum increases.
Angular momentum remains constant.
Angular momentum becomes zero.
#12
Which law of motion is associated with the conservation of angular momentum?
Newton's First Law
Newton's Second Law
Newton's Third Law
Newton's Law of Universal Gravitation
#13
Which of the following situations involves the conservation of angular momentum?
A car accelerating on a straight road
A helicopter taking off vertically
A ball rolling down an inclined plane
A boat moving through water
#14
A spinning top eventually slows down and falls over due to which physical phenomenon?
Angular acceleration
Conservation of angular momentum
Frictional forces
Centripetal acceleration
#15
What happens to the angular momentum of a system when an external torque is applied?
It remains constant.
It decreases.
It increases.
It becomes zero.
#16
Which of the following is the correct formula for rotational kinetic energy?
KE = 1/2 * m * v^2
KE = 1/2 * I * ω^2
KE = m * g * h
KE = F * d
#17
What does the term 'precession' refer to in rotational motion?
The wobbling motion of a spinning object
The change in angular velocity over time
The resistance of an object to changes in rotational motion
The linear motion of a rotating object
#18
Which of the following is true about the conservation of angular momentum?
Angular momentum is only conserved in the absence of external forces.
Angular momentum is conserved in both linear and rotational motion.
Angular momentum is always decreasing in any type of motion.
Angular momentum is only conserved when a body is at rest.
#19
Which of the following factors affect the moment of inertia of an object?
Mass and volume
Density and shape
Speed and velocity
Temperature and pressure
#20
A spinning ice skater pulls her arms inward, causing her rotational speed to increase. What happens to her angular momentum?
It decreases.
It remains constant.
It increases.
It becomes zero.
#21
In which scenario is angular momentum conserved?
When a force is applied to change the direction of motion
When a torque is applied to change the rate of rotation
When a body moves along a straight path
When there is friction between two surfaces
#22
A wheel rotating about its axis has a constant angular velocity. If its radius is doubled, what happens to its angular momentum?
It doubles.
It quadruples.
It remains the same.
It becomes zero.
#23
A solid disk and a ring, both having the same mass and radius, are rolled down an incline. Which object reaches the bottom first?
The disk
The ring
Both reach at the same time
It depends on the angle of the incline
#24
A gyroscope maintains its orientation in space due to which principle of physics?
Newton's first law
Conservation of energy
Conservation of angular momentum
Archimedes' principle