Rotational Motion

Q. If a rotating body has an angular momentum of L and its moment of inertia is I, what is the angular velocity ω of the body?
  • A. L/I
  • B. I/L
  • C. L^2/I
  • D. I^2/L
Q. If a rotating object has a moment of inertia of 4 kg·m² and is spinning with an angular velocity of 3 rad/s, what is its angular momentum?
  • A. 12 kg·m²/s
  • B. 4 kg·m²/s
  • C. 1 kg·m²/s
  • D. 7 kg·m²/s
Q. If a rotating object has a moment of inertia of 5 kg·m² and is rotating with an angular velocity of 3 rad/s, what is its angular momentum?
  • A. 15 kg·m²/s
  • B. 5 kg·m²/s
  • C. 8 kg·m²/s
  • D. 10 kg·m²/s
Q. If a rotating object has a moment of inertia of 5 kg·m² and is spinning with an angular velocity of 3 rad/s, what is its angular momentum?
  • A. 15 kg·m²/s
  • B. 5 kg·m²/s
  • C. 8 kg·m²/s
  • D. 10 kg·m²/s
Q. If a rotating object has a moment of inertia of I and is rotating with an angular velocity ω, what is its rotational kinetic energy?
  • A. 1/2 Iω
  • B. 1/2 Iω^2
  • C. Iω^2
  • D.
Q. If a solid cylinder is rotated about its diameter, what is its moment of inertia?
  • A. 1/2 MR^2
  • B. 1/4 MR^2
  • C. 1/3 MR^2
  • D. MR^2
Q. If a solid cylinder rolls without slipping, what fraction of its total kinetic energy is translational?
  • A. 1/3
  • B. 1/2
  • C. 2/3
  • D. 1
Q. If a solid disk rolls without slipping, what fraction of its total energy is translational at the bottom of an incline?
  • A. 1/4
  • B. 1/3
  • C. 1/2
  • D. 2/3
Q. If a solid sphere and a hollow sphere have the same mass and radius, which one will roll down an incline faster?
  • A. Solid sphere
  • B. Hollow sphere
  • C. Both will roll at the same speed
  • D. Depends on the angle of incline
Q. If a solid sphere and a solid cylinder of the same mass and radius are released from rest at the same height, which will have a greater speed at the bottom?
  • A. Solid sphere
  • B. Solid cylinder
  • C. Both have the same speed
  • D. Depends on the mass
Q. If a solid sphere of mass M and radius R is rotating about an axis through its center, what is its moment of inertia?
  • A. 2/5 MR^2
  • B. 3/5 MR^2
  • C. 1/2 MR^2
  • D. 1/3 MR^2
Q. If a solid sphere of radius R and mass M is rotating about an axis through its center, what is its moment of inertia?
  • A. 2/5 MR^2
  • B. 3/5 MR^2
  • C. 1/2 MR^2
  • D. 1/3 MR^2
Q. If a torque of 15 Nm is produced by a force acting at a distance of 0.3 m from the pivot, what is the magnitude of the force?
  • A. 50 N
  • B. 45 N
  • C. 40 N
  • D. 30 N
Q. If a torque of 25 Nm is applied and the lever arm is 5 m, what is the angle at which the force is applied if the force is 10 N?
  • A. 0 degrees
  • B. 30 degrees
  • C. 60 degrees
  • D. 90 degrees
Q. If a torque of 25 Nm is applied to a wheel with a radius of 0.5 m, what is the force applied at the edge of the wheel?
  • A. 50 N
  • B. 40 N
  • C. 30 N
  • D. 20 N
Q. If a torque of 25 Nm is generated by a force acting at a distance of 0.5 m, what is the force applied?
  • A. 50 N
  • B. 40 N
  • C. 30 N
  • D. 20 N
Q. If a torque of 30 Nm is applied to a lever arm of 3 m, what is the force applied?
  • A. 5 N
  • B. 10 N
  • C. 15 N
  • D. 20 N
Q. If a torque of 5 Nm is applied to a rotating object with a moment of inertia of 2 kg·m², what is the angular acceleration?
  • A. 2.5 rad/s²
  • B. 5 rad/s²
  • C. 10 rad/s²
  • D. 1 rad/s²
Q. If a torque of 8 Nm is produced by a force acting at a distance of 0.2 m, what is the force?
  • A. 20 N
  • B. 30 N
  • C. 40 N
  • D. 50 N
Q. If a wheel of radius R rolls without slipping, what is the distance traveled by the center of mass after one complete rotation?
  • A. 2πR
  • B. πR
  • C. 4R
  • D. R/2
Q. If the angle between the force and the lever arm is 90 degrees, how does it affect the torque?
  • A. Torque is zero
  • B. Torque is maximum
  • C. Torque is half
  • D. Torque is minimum
Q. If the angle between the force and the lever arm is 90 degrees, what is the torque produced by a 15 N force applied at a distance of 2 m?
  • A. 0 Nm
  • B. 15 Nm
  • C. 30 Nm
  • D. 45 Nm
Q. If the angular momentum of a rotating object is conserved, what can be said about its moment of inertia and angular velocity?
  • A. Both increase
  • B. Both decrease
  • C. One increases and the other decreases
  • D. Remain constant
Q. If the angular momentum of a rotating object is doubled while its moment of inertia remains constant, what happens to its angular velocity?
  • A. Doubles
  • B. Halves
  • C. Remains the same
  • D. Increases by a factor of 4
Q. If the angular momentum of a system is conserved, which of the following statements is true?
  • A. Net external torque is zero
  • B. Net external force is zero
  • C. Kinetic energy is conserved
  • D. Linear momentum is conserved
Q. If the angular momentum of a system is zero, what can be said about the motion of the system?
  • A. It is at rest
  • B. It is moving linearly
  • C. It is rotating
  • D. It can be in any motion
Q. If the angular momentum of a system is zero, what can be said about the motion of the particles in the system?
  • A. They are at rest
  • B. They are moving in a straight line
  • C. They are rotating
  • D. They are in circular motion
Q. If the lever arm is doubled while keeping the force constant, how does the torque change?
  • A. It doubles
  • B. It triples
  • C. It remains the same
  • D. It halves
Q. If the moment of inertia of a body is 10 kg m², what is the angular momentum when it rotates with an angular velocity of 5 rad/s?
  • A. 50 kg m²/s
  • B. 10 kg m²/s
  • C. 5 kg m²/s
  • D. 2 kg m²/s
Q. If the moment of inertia of a body is 10 kg m², what is the rotational kinetic energy when it rotates with an angular velocity of 5 rad/s?
  • A. 125 J
  • B. 50 J
  • C. 100 J
  • D. 75 J
Showing 211 to 240 of 329 (11 Pages)
Soulshift Feedback ×

On a scale of 0–10, how likely are you to recommend The Soulshift Academy?

Not likely Very likely