The net value for this quantity equals the angular acceleration times the moment of inertia, and is calculated by summing the cross product of each force and its distance to the axis.
The polar moment of inertia is defined using a ratio of this quantity to the maximum shear stress on a beam. Henry Cavendish calculated big G using a device whose governing equation is that this quantity equals "negative kappa theta." This quantity is nonzero in a couple. For a wire loop placed in a field, this quantity equals the field strength times the dipole moment times the sine of the angle between them. The rate at which a top (*)  precesses equals this quantity divided by the top's angular momentum. The net value for this quantity equals the angular acceleration times the moment of inertia, and is calculated by summing the cross product of each force and its distance to the axis. For 10 points, name this quantity that causes objects to rotate.
The polar moment of inertia is defined using a ratio of this quantity to the maximum shear stress on a beam.
 torque  [or  tau ; or  moment of force ; prompt on  moment ]