If my angular velocity slows from 30 Hz to 20 Hz in 72°, what is my deceleration?

The deceleration is -7.85x10³ rad/s².

Explanation:

The angular speed (ω) is related to frequency (f) as follows:

When the frequency is 30 Hz the angular speed is:

Now, when the frequency is 20 Hz the angular speed is:

Finally, the angular acceleration (α) can be found using the following equation:

Where:

θ: is the angular displacement = 72°

Therefore, the deceleration is -7.85x10³ rad/s².

I hope it helps you!                  

33: i think it’s b

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