PHYS 1030 - Ch. 9 Review

What is the axis of rotation?

• A vector quantity whose magnitude is the force times the lever arm.

• The motion of an object in which all points move in parallel paths.

• The shortest distance from a rotation axis to a line of action of a force.

• A line of points about which an object rotates.

What does the lever arm represent?

• The shortest distance from a rotation axis to a line of action of a force.

• The state of an object with no translational or rotational acceleration.

• A line drawn colinear with a force.

• The motion of a rigid object in which points move in circles about some axis.

What is torque?

• A vector quantity whose magnitude is the force times the lever arm.

• A rotational quantity which plays the same role as mass in linear motion.

• The point at which the weight of the body can be assumed to act when calculating torque.

• The total kinetic energy of all parts of a rigid object due to rotational motion.

What is translational motion?

• The motion of an object where all points move in circles about some axis.

• The product of the moment of inertia of the object and its angular velocity.

• The work done by a torque in rotating an object through an angle.

• The motion of an object in which all points of the object move in parallel paths.

What defines rotational motion?

• The point at which the weight of the body can be assumed to act for torque calculations.

• A state where no net torque and no net force act on an object.

• The shortest distance from a rotation axis to a line of action of a force.

• The motion of a rigid object in which the points of the object move in circles about some axis.

What is equilibrium?

• The total kinetic energy due to rotational motion about an axis.

• The motion of an object in which all points move in parallel paths.

• The state of an object when it has no translational or rotational acceleration.

• A vector quantity whose magnitude is the force times the lever arm.

What is the center of gravity of a rigid body?

• The point at which the weight of the body can be assumed to act when calculating the torque.

• The product of the moment of inertia of the object and its angular velocity.

• A rotational quantity which plays the same role as mass in linear motion.

• The shortest distance from a rotation axis to a line of action of a force.

What is the moment of inertia of an object?

• A rotational quantity which plays the same role as mass in linear motion.

• The state of an object with no translational or rotational acceleration.

• The motion of an object in which all points of the object move in parallel paths.

• The work done by a torque in rotating an object through an angle.

What is rotational work?

• The work done by a torque in rotating an object through an angle.

• The state of an object when it has no translational or rotational acceleration.

• The total kinetic energy of all parts of a rigid object due to their rotational motion.

• The product of the moment of inertia of the object and its angular velocity.

What describes angular momentum of a rigid object?

• The state of an object with no translational or rotational acceleration.

• The shortest distance from a rotation axis to a line of action of a force.

• The motion of an object in which all points of the object move in parallel paths.

• The product of the moment of inertia of the object and its angular velocity.