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# CRPhysicsCh8Vocab

### CRPhysicsChapter8Vocabulary

the ability of a force to cause an object to rotate about some axis of rotation torque
the perpendicular distance from the axis of rotation to a line drawn along the direction of the force lever arm
motion that changes an object's position; not the same as rotational motion translational motion
point at which all the mass of a body can be considered to be concentrated when analyzing translational motion center of mass
the position at which the gravitational force acts on the extended object as if it were a point mass center of gravity
the tendency of a rotating object to resist a change in its rotational motion moment of inertia
product of a rotating object's moment of inertia and angular speed about the same axis angular momentum
energy of an object due to its rotational motion rotational kinetic energy
any device that transmits or modifies force, usually by changing the force applied to the object machine
combinations of these make up all machines; include lever, pulley, screw, wheel and axle, incline plane, and wedge simple machine
used to compare how large the output force is relative to the input force mechanical advantage
a measure of how much input energy is lost compared to how much energy is used to perform work on an object efficiency
Created by: CRMissK

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