#1
What is the formula for angular momentum?
L = mgh
L = Iω
L = mv
L = Fd
#2
Which of the following statements about torque is true?
Torque is a scalar quantity.
Torque causes translational motion.
Torque is the rate of change of linear momentum.
Torque is the product of force and lever arm.
#3
Which of the following factors affect the period of a simple pendulum?
Length of the pendulum
Mass of the pendulum
Amplitude of the pendulum
All of the above
#4
What happens to the angular momentum of a system if no external torques act on it?
The angular momentum increases.
The angular momentum decreases.
The angular momentum remains constant.
The angular momentum becomes zero.
#5
Which of the following statements about rotational motion is true?
Rotational motion is always linear.
Rotational motion involves motion along a straight line.
Rotational motion involves motion around an axis.
Rotational motion does not involve angular displacement.
#6
What is the SI unit of angular momentum?
#7
Which of the following is true about rotational inertia?
It depends only on mass.
It is a measure of an object's resistance to linear motion.
It depends on both mass and shape.
It is always constant.
#8
A solid disk and a ring, both having the same mass and radius, start from rest and roll down a hill without slipping. Which reaches the bottom first?
The solid disk
The ring
Both reach simultaneously
It depends on the masses.
#9
Which of the following statements about conservation of angular momentum is correct?
Angular momentum is always conserved in isolated systems.
Angular momentum is conserved only in linear motion.
Angular momentum is conserved only in rotational motion.
Angular momentum is never conserved.
#10
What happens to the angular velocity of a rotating object if its moment of inertia decreases?
Angular velocity decreases.
Angular velocity increases.
Angular velocity remains constant.
Angular velocity becomes zero.
#11
If an object's net torque is zero, which of the following statements is true?
The object may be rotating at a constant angular velocity.
The object is necessarily at rest.
The object may have a changing angular velocity.
The object has a non-zero angular acceleration.
#12
Which of the following quantities is a vector in rotational dynamics?
Angular velocity
Angular momentum
Moment of inertia
Rotational kinetic energy
#13
A solid sphere and a hollow sphere, both having the same mass and radius, start from rest and roll down an incline without slipping. Which has a greater linear acceleration?
The solid sphere
The hollow sphere
Both have the same linear acceleration.
It depends on the mass distribution.
#14
What is the rotational equivalent of Newton's second law?
Στ = Iα
τ = rFsinθ
F = ma
F = μN
#15
In which scenario would a rotating object experience the least rotational inertia?
A solid sphere rotating about its axis
A thin ring rotating about its axis
A solid cylinder rotating about its axis
A thick rod rotating about its axis