The diameter of a ceiling fan, blade tip to blade tip, is 120 centimeters.

a) about how many whole revolutions does it take for the fan to move 1000 meters?
_

b) if the fan rotates at 40 revolutions per minute, about how long does it take to move 1000 meters? round to the nearest minute.
_

Question

contestada

Respuesta :

batolisis batolisis · Answer 1 · 2022-06-06T18:52:32+02:00

The number of whole revolutions for 1000 meters is 265, while the time taken to move 1000 meters with a speed of 40rev/min is 7minutes.

This is the number of times a body moves round a circular path.

A revolution is equal to the circumference of a circle.

Analysis:

r = 120/2 = 60cm

1 revolution of a circle = 2πr

Let n be the number of revolutions

so that 2πr x n = 1000 x 100 since 100 cm = 1 m

n = 100000/2πr = 265 revolutions

If the Fan turns 40 rev / minute

Then it 265 revolutions = 1000 meters, 265/40 = 7 minutes

In conclusion, the number of revolutions for 1000 meters is 265 and the time taken for 265 revolutions is 7 minutes.

Learn more about revolutions : brainly.com/question/16533738

#SPJ1