The flywheel of a steam engine runs with a constant angular speed of 375 rev/min. When steam is shut off, the friction of the bearings stops the wheel in 1.8 h.
At the instant the flywheel is turning at 75 rev/min, what is the tangential component of the linear acceleration of a flywheel particle that is 50 cm from the axis of rotation?
Angular Acceleration: -3.47 rev/(min^2)
Tangential component of the linear acceleration = (angular acceleration)(radius to object)
The Attempt at a Solution
I tried dividing the angular acceleration figure by 60 to make it in rev/(sec^2), then multiplied by r (.5 m), and ended up with the wrong answer. I tried multiplying that angular acceleration figure by 2pi to convert it to radians then multiplied it out, but still no dice. I have one attempt left. Do I need to clarify anything?