The angular speed of a rotor in a centrifuge increases from 439 to 1430 rad/s in a time of 6.34 seconds. (A) obtain the angle through which the rotor turns. (B) What is the magnitude of the angular acceleration?

At the local swimming hole, a favorite trick is to run horizontally off a cliff that is 5.82 m above the water. One diver runs off the edge of he cliff, tucks into a "ball," and rotates on the way down with an average angular speed of 1.83 rev/s. Ignore air resistance and etermine the number of revolutions she makes while on the way down. Number 1.99 Units rev

A ceiling fan is rotating counterclockwise with a constant angular acceleration of 0.50? rad/s2 about a fixed axis perpendicular to its plane and through its center. Assume the fan starts from rest. (a) What is the angular velocity of the fan after 2.0 s? (Enter the magnitude.) rad/s (b) What is the angular displacement of the fan after 2.0 s? (Enter the magnitude.) rad (c) How many revolutions has the fan gone through in 2.0 s? rev

A car initially traveling at 24.2 m/s undergoes a constant negative acceleration of magnitude 2.10 m/s? after its brakes are applied. (a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tires have radii of 0.325 m? 69.4 rev (b) What is the angular speed of the wheels when the car has traveled half the total distance? Your response differs from the correct answer by more than 10%. Double check your calculations. rad/s Need Help? Read It

A fan rotating with an initial angular velocity of 1000 rev/min is switched off. In 2 seconds, the angular velocity decreases to 200 rev/min. Assuming the angular acceleration is constant, how many revolutions does the blade undergo during this time?

A flywheel with a diameter of 2.12 m is rotating at an angular speed of 92.5 rev/min. (a) What is the angular speed of the flywheel in radians per second? (b) What is the linear speed of a point on the rim of the flywheel? (c) What constant angular acceleration (in revolutions per minute-squared) will increase the wheel's angular speed to 1250 rev/min in 58.6 s? (d) How many revolutions does the wheel make during that 58.6 s?