The linear speed of the circle is 80 m / s, the diameter of the circle is 20 cm. Find the number of revolutions per minute.
| April 27, 2021 | education
Task data: V (linear speed of the taken circle) = 80 m / s; D (circle diameter) = 20 cm (in SI D = 0.2 m); t (rotation duration) = 1 min (in SI t = 60 s).
The number of revolutions of the circle taken can be calculated using the formula: N = t / T = t * V / (Π * D).
Let’s calculate: N = 60 * 80 / (3.14 * 0.2) = 7643 revolutions.
Answer: The taken circle will make 7643 complete revolutions in one minute.
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