rotatioanl dynamics

[ACLerok]

The engine of an aircraft propeller delivers an amount of power 171. hp to the propeller at a rotational velocity of 2310 rev/min. I found the torque produced to be 527.612 N*m
How can i find the work done by the engine in one rev of the propeller?

[gnome]

Power is the rate at which work is done.

171 hp = 746 W = 746 J/s

You have how many revs / s ?

(J/s)/(r/s) = J/r

[jamesrc]

use this equation to find the work done: W = τθ (it's the rotational analog to W = Fd; realize that it's still a dot product, but we've simplified already)

[jamesrc]

Touche, gnome.

ACLerok: you should get the same answer either way.