Homework Help: Physics

Posted by Hannah on Saturday, December 17, 2011 at 10:57pm.

The angular speed of a propeller on a boat increases with constant acceleration from 12 rad/s to 26 rad/s in 2.5 revolutions. What is the acceleration of the propeller?

Physics - drwls, Saturday, December 17, 2011 at 11:27pm
Angular acceleration = (26 - 12)/Time

For the Time, use this equation

(Avg. Angular speed) x time
= 2.5*2 pi radians

Time = 0.827 s

Angular Acceleration
= [14 rad/s]/0.827 s
= ? rad/s^2

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