allenreview

allenreview christopher mead physics

-Circular motion

circular motion is equal movement of an object at constant speed around a circle with fixed radios. axis is a straight around which rotations place. Rotation is a object turns around an internal axis Revolution object turns around external axis

-rotational speed

Linear speed – distance time Tangential speed- speed along a circular path. The rotational speed v = rw Centripetal force causes an object to follow a curricular path f^c =mv^2/r Period(T) = time needed for an object to make one complete revolution Distance traveled= circumference / circumference = 2TTr =TTd

-Newton’s law of universal gravitational

Newton’s law of universal gravitational applies to all objects As the mass increase the gravitational force incresase As the distanace increase the gracitational force decrease

-Friction

Friction is often minimzed in solving force and motion problems, but in the real world friction is everwhere ex. friction lets a pencil mark on a piece of paper and so you can erase mistakes. think about the friction as you push a crate across the floor.