Question

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

Answer 1

2.51 m/s

Step-by-step explanation:

Given that,

Angular speed of a fan,
`\omega=0.5\ rev/s = 3.14\ rad/s`

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 :

`v=r\omega\\\\v=0.8* 3.14\\\\v=2.51\ m/s`

So, the required speed is 2.51 m/s.