The spin-drier of a washing machine revolving at 900.rpm slows down uniformly to 300.rpm while making 60. revolutions. find the angular acceleration and the time required to turn through these 60. revolutions.

An object starts from rest at point f and speeds up continuously as it moves around an oval. a. choose a point about 1/8 th of the way around the oval from point f, and label it point g. draw a vector to represent the velocity of the object at point g. b. determine the change in velocity vector   between points f and g.