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Veseljchak [2.6K]
1 year ago
11

A wheel spins at a constant angular speed of 24rad/s.How many revolutions will the dosk go through in 5minutes?​

Engineering
1 answer:
Margaret [11]1 year ago
5 0

<u>Answer:</u>

The wheel will go through 1146 revolutions in 5 minutes.

<u>Explanation:</u>

We can the formula:

\boxed{\omega = \frac{2 \pi}{T}}

where

ω ⇒ angular speed (24 rad/s),

T ⇒ time period (? s),

and solve for T to find the time it takes for the wheel to complete one revolution.

⇒  24 = \frac{2 \pi}{T}

⇒  T = \bf \frac{2 \pi}{24}  s

This means it takes \bf \frac{2 \pi}{24} seconds for the wheel to complete one revolution.

Now, using the unitary method,

In \frac{2 \pi}{24} seconds          ⇒    1 revolution completed

In 1 second              ⇒    1 ÷ \frac{2 \pi}{24}   =  \frac{24}{2 \pi}  revolutions completed

In (5 × 60 = ) 300s  ⇒     \frac{24}{2 \pi}   ×  300   = 1145.9

                                                            ≅ 1146 revolutions completed

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