A tire balancing assembly rotated a tire initially at 30 revs/min In a clockwise direction. The motor is turned off and the tire slows at a constant rate coming to rest in 12 sec. diameter of the tire is 30 inch. A)what was the the angular displacement during this time period? B) the centripetal acceleration of a point on the rim of time before motor was turned off

A wheel is rotating at 15 rad/s.  a)The angular acceleration of the wheel if it stops after 20 seconds. b)The angle through which the wheel rotates in coming to rest? c)The number of revolutions made by the wheel in coming to rest?

Pilots can be tested for stresses of flying high speed jets in a whirling human centrifuge that takes 1.5 min to turn through 29 complete revolutions before reaching final speed.  a) calculate angular acceleration in rad/s^2  b) final angular speed in rpm

During a very quick stop, a car decelerates at 7.69m/s?. a) What is the angular acceleration of its 0.195-m-radius tires, assuming they do not slip on the pavement? rad/s? b) How many revolutions do the tires make before coming to rest, given their initial angular velocity is 89 rad/s? rev c) How long does the car take to stop completely? d) What distance does the car travel in this time? e) What was the car's initial velocity? m/s

A person with mass disk is initially spinning at w = 1.9 rad/s. The person then walks 2/3 of the way toward the center of the disk (ending 0.59 m from the center). mp = 72 kg stands on a spinning platform disk with a radius of R = 1.77 m and mass md = 195 kg. The