| A | B |
|---|
| tangential speed | the linear speed tangent to a curved path |
| the linear speed tangent to a curved path | tangential speed |
| rotational speed | the number of rotations or revolutions per unit of time: often measured in rotations or revolutions per unit of time |
| the number of rotations or revolutions per unit of time: often measured in rotations or revolutions per unit of time | rotational speed |
| rotational inertia | the property of an object that measures its resistance to any change in its state of rotation |
| the property of an object that measures its resistance to any change in its state of rotation | rotational inertia |
| torque | the product of force and lever-arm distance, which tends to produce rotation |
| the product of force and lever-arm distance, which tends to produce rotation | torque |
| center of mass | the average position of the mass of an object |
| the average position of the mass of an object | center of mass |
| center of gravity | the average position of weight or the single point associated with an object where the force of gravity can be considered to act |
| the average position of weight or the single point associated with an object where the force of gravity can be considered to act | center of gravity |
| equilibrium | the state of an object which it is not acted upon by a net force or net torque |
| the state of an object which it is not acted upon by a net force or net torque | equilibrium |
| centripetal force | a force directed toward a fixed point, usually the cause of circular motion |
| a force directed toward a fixed point, usually the cause of circular motion | centripetal force |
| centrifugal force | an outward force apparent in a rotating frame of reference |
| an outward force apparent in a rotating frame of reference | centrifugal force |
| angular momentum | the product of a body's rotational inertia and rotational velocity about a particular axis |
| the product of a body's rotational inertia and rotational velocity about a particular axis | angular momentum |
| conservation of angular momentum | when no external torque acts on an object or system of objects, no change of angular momentum can occur |
| when no external torque acts on an object or system of objects, no change of angular momentum can occur | conservation of angular momentum |
| equation for tangential speed | v~rw tangential speed ~ radial speed • rotational speed |
| equation for torque | torque=lever arm • force |
| equation for centripetal force | F=mv2/r |
| equation for angular momentum | am=mvr |
