Question

The frequency of rotation of fan changed froms 1 revolution per second in 10 revolution per second find the angular accelration​

Answer 1

Answer:

Let the angular acceleration be α.

From the given data:

⇒10×2π=

2

1

α(3)

2

⇒20π=

2

9α

Let us take revolution for first six seconds:

⇒θ

o

=

2

1

α(6)

2

=18α=80π

The no. of revolutions in first six seconds are 40.

The no. of revolutions in the last three seconds =40−10=30 revolutions