Rotational motion homework question

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SUMMARY

The discussion revolves around a physics homework problem involving a disk undergoing constant angular acceleration. The initial position of the disk is at q0 = -90°, and after 3.1 seconds, it reaches a final position of qf = 130°. The key question is to determine the angular speed of the disk after it completes one full revolution back to its original position. The calculated angular speed is 287.6785532, which needs conversion to radians per second using the formula: multiply by π/180.

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Homework Statement


A disk with a radial line painted on it is mounted on an axle perpendicular to it and running through its center. It is initially at rest, with the line at q0 = -90°. The disk then undergoes constant angular acceleration. After accelerating for 3.1 s, the reference line has been moved part way around the circle (in a counterclockwise direction) to qf = 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°)?

|w| = rad/s

Homework Equations





The Attempt at a Solution



287.6785532 that's the answer i got, but i do not know how to convert it to rad/s
 
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Multiply by pi/180
 

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