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the linear speed tangent to a curved path such as in circular motion.
the number of rotations a revolutions per unit of time often measured in rotations are revolutions per second or minute
that property of an object that measures its resistance to any change in its state of rotation if at rest the body tends to remain at rest if rotating it tends to remain rotating and will continue to do so unless acted upon by an external net torque
- the product of force and lever arm distance which tends to produce rotation
- Torque = lever arm X force
center of mass
the average position of the mass of an object. The CM moves as if all the external forces acted at this point
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 state of an object in which it is not acted upon by a net force or net torque.
a force directed toward a fixed point usually the cause of circular motion.
an outward force a parent in a rotating frame of reference. It is a parent (fictitious) in the sense that it is not part of an interaction what is the result of rotation - with no reaction force counterpart
the product of a bodies rotational inertia and rotational velocity about a particular access for an object that is small compared with the radio distance it can be expressed as the product of mass speed and the radio distance of rotation.
conservation of angular momentum
When no external torque acts on an object or a system of objects, no change of a angular momentum can occur. Hence, the angular momentum before an event involving only internal torques or no torque is equal to the angular momentum after the event.
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