PHYSICS LAB 5 Static Rotational Equilibrium

The product of the distance from the axis of rotation and the force perpendicular to it when a force is applied to rotate an object.

Torque

Another term for torque commonly used by engineers.

Moment of Force

The point around which an object rotates.

Axis of Rotation

When the force is not perpendicular to the distance, torque is the product of the distance and this.

The Component of Force Perpendicular to the Distance

The sign convention for counterclockwise rotation in torque.

Positive

The sign convention for clockwise rotation in torque.

Negative

The angle used in the torque formula, measured between the distance r and the force F.

θ (Angle between r and F)

The state of an object when the sum of all its external torques is equal to zero.

Static Rotational Equilibrium

The condition of equilibrium stating that the sum of all external torques acting on an object must be zero.

Second Condition of Equilibrium

The condition of equilibrium stating that the sum of all external forces acting on an object must be zero.

First Condition of Equilibrium

The two conditions that must be satisfied for an object to be in complete static equilibrium.

Sum of all external forces = 0 AND Sum of all external torques = 0

The type of motion that is absent when the summation of external forces on an object equals zero.

Translational Motion

The type of motion that is absent when the summation of external torques on an object equals zero.

Rotational Motion