Newton's 2nd Law: Rotation

The relationship between the net external torque and the angular acceleration is of the same form as Newton's second law and is sometimes called Newton's second law for rotation. It is not as general a relationship as the linear one because the moment of inertia is not strictly a scalar quantity. The rotational equation is limited to rotation about a single principal axis, which in simple cases is an axis of symmetry.

Net external torque = moment of inertia x angular acceleration

N m = kg m2 x rad/s2


You may enter data for any two of the quantities and then click on the active text for the quantity you wish to calculate. The data values will not be forced to be consistent until you click on the quantity to calculate.

Index

Moment of inertia concepts
 
HyperPhysics***** Mechanics ***** Rotation R Nave
 Go Back