Understanding Angular Motion

What is angular motion?

• The movement of a body along a straight line

• The movement of a body in a circular path around a fixed point

• The movement of a body caused by a force acting through the center of mass

• The movement of a body caused by external friction

What causes angular motion?

• A force applied through the center of mass

• A force that creates torque, causing rotation

• A force that resists motion

• A force that only acts on the outer edge of the body

What is torque?

• A force that resists rotation

• The turning effect of a force around an axis

• The speed of rotational movement

• The distance between the body and the axis of rotation

How does distance from the axis of rotation affect torque?

• Increasing the distance makes it harder to rotate

• Increasing the distance makes it easier to rotate

• Distance does not affect the torque

• Applying force closer to the axis makes it easier to rotate

Which formula represents torque?

• Torque (Nm) = Mass (kg) × Distance from the axis (m)

• Torque (Nm) = Force (N) × Distance from the axis (m)

• Torque (Nm) = Force (N) ÷ Distance from the axis (m)

• Torque (Nm) = Mass (kg) ÷ Distance from the axis (m)

According to Newton’s First Law of Motion, when will a body stop rotating?

• It will stop rotating if no force is applied

• It will continue rotating until a force acts on it

• It will stop rotating at the same speed unless the axis changes

• It will stop rotating immediately after force is applied

Which example best illustrates Newton’s Second Law of Motion in angular motion?

• An ice skater continues spinning unless something stops them

• A cricket bowler applies torque to make the ball spin faster

• A diver pushes down on the board, causing the board to push them up

• A gymnast rotates due to an external force

What is angular displacement?

• The time taken for an object to complete a rotation

• The smallest change in angle between the start and end of rotation

• The force applied to start rotation

• The speed of rotational movement

What is angular velocity?

• The speed of rotation only

• The rate at which angular velocity changes

• The direction of rotation only

• The speed and direction of rotation

What is angular acceleration?

• The speed of the object in a rotational movement

• The rate at which an object speeds up or slows down in its rotation

• The direction of the rotational movement

• The force applied to create rotation