Question

Вентилятор вращается с частотой 900 об/мин. После выключения вентилятор, вращаясь равнозамедленно, сделал до остановки 75 оборотов. Какое время прошло с момента выключения вентилятора до полной его остановки?

Answer 1

N=n*t
Отсюда находим время: примерно 0,83 минуты

Answer 2

Calculating Time Taken for Fan to Stop

To calculate the time taken for the fan to stop after being turned off, we can use the formula:

t = (N1 - N2) / (N1 * N2) * 60

Where: - t = time taken for the fan to stop - N1 = initial speed of the fan (900 revolutions per minute) - N2 = final speed of the fan (75 revolutions per minute)

Using the given values, we can calculate the time taken for the fan to stop.

t = (900 - 75) / (900 * 75) * 60

t = 825 / 67500 * 60

t ≈ 0.0740741 minutes

So, the time taken for the fan to stop after being turned off is approximately 0.0740741 minutes.

This calculation is based on the given information and the formula for calculating the time taken for an object to stop given its initial and final speeds.

I hope this helps! If you have any other questions, feel free to ask.