Question

колесо велосипеда має діаметр 60 см . З якою швидкістю рухається велосипедист, якщо колесо обертається з частотою 180 об/хв? який період обертання колеса? ​

Answer 1

Ответ:

v = 2pR / T = 2pR * n

v = 6.28 * 60 * 180 = 67824 см / мин

Answer 2

Calculation of Bicycle Speed:

To calculate the speed of the cyclist, we can use the formula:

Speed = Circumference × Frequency

The circumference of a circle is given by the formula:

Circumference = π × Diameter

Given that the diameter of the bicycle wheel is 60 cm, we can calculate the circumference as follows:

Circumference = π × 60 cm

Now, we need to convert the frequency from revolutions per minute (rpm) to revolutions per second (rps). Since there are 60 seconds in a minute, we can use the following conversion:

Frequency (rps) = Frequency (rpm) / 60

Given that the frequency is 180 rpm, we can calculate the frequency in rps as follows:

Frequency (rps) = 180 rpm / 60

Now, we can substitute the values into the formula to calculate the speed:

Speed = Circumference × Frequency (rps)

Let's calculate the speed and the period of rotation of the wheel.