Question

An electric fan is set on its HIGH setting. After the Low push button is depressed, the angular speed of the fan blades decreases to a value of 8.00x10^2 rev/min in 1.75sec. The deceleration is 42.0 rad/s^2. Determine the initial angular speed of the blades in rev/min

Answer 1

use this relation
v = u + at
this should work fine in rotational motion.

Answer 2

Thank you :)

Answer 3

these rules that we use in linear motion works in rotational motion too. just replace distance by angles in radians, velocity by angular velocity, accn by angular accn