motors (1 Viewer)

[clicker]

A flywheel rotates at 480 rpm. Calculate a) the angular speed at any point on the
wheel and b) the tangential speed 30.0cm from the centre

 

[BlackJack]

480 revolutions per minute? Per second, 480/60 revolutions.
One revolution is 2Pi radians...
Answer:
=480*2Pi /60
= 16*Pi rad / sec

tangential speed is always angular speed times the radius.
.'. = 16Pi * 0.3
= 4.8*Pi ms^-1