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: https://www.flipitphysics.com/Course/PlaySlideshow?unitltemlD-880897&enrollmentiD-181913; welcome to this IE. You may navigate to any page youve seen already using the IE Outline tab on the right. Spinning Disk Standad Exercie Acceleration of a Tennis Rac Br ring and Pulley Standard Exercise Fan Angular Velocity Graph A disk with a radial line painted on it is mounted on an axle perpendicular to it and running through its center. It ls initially at rest, with the line at 0o--90. The disk then undergoes constant angular acceleration. After accelerating for 3.1 s, the reference line has been moved part way around the dircle (in a counterclockwise direction) to 8r 130 Given this information, what is the angular speed of the disk after it has traveled one complete revolution (when it returns to its original position at-90') ceiratian tn Standard Exercie Acceleration in Ecuador radis Submit Stundard Exerc nnint rad/s Submit Help Standard Exercisn Compact Disk Mountain Bike

Explanation / Answer

theta0 = 90 degree = 1.571 rad

thetaf = 130 degree = 2.27 rad

t = 3.1 s

let the angular acceleration is a

Using second equation of motion

thetaf -theta0 = 0.5 * a * t^2

2.27 - 1.571 = 0.5 * a * 3.1^2

a = 0.145 rad/s^2

let the angular speed completing one revolution is wf

Using third equation of motion

wf^2 = 2 * a * theta

wf = sqrt(2 * 0.145 * 2pi)

wf = 1.35 rad/s

the fianl angular speed after completing one revolution is 1.35 rad/s

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