During the slowing down process, there is a time when the angular speed is 0.5 rev/s. The fan arm is 0.8 m long. What is the speed of a point on the end of the fan arm at this time

2.51 m/s

Explanation:

Given that,

Angular speed of a fan,

Length of the fan arm, r = 0.8 m

We need to find the speed of a point on the end of the fan arm at this time. Let v is the speed. It is given in terms of angular speed is given by :

So, the required speed is 2.51 m/s.

magnitude and direction

if they have a finite resultant