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A typical circular saw has a radius of 0. 184 m and rotates so the velocity of its edge is 110 m/s. How many RPM does the saw make?

User UsmanJ
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1 Answer

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Final answer:

The circular saw makes approximately 565 RPM.

Step-by-step explanation:

First, we need to convert the velocity from m/s to m/min, since the question asks for the saw's rotational speed in RPM. To do this, we can use the fact that there are 60 seconds in a minute. Therefore, the linear speed of a point on the edge of the circular saw is 110 m/s * 60 = 6600 m/min.

Next, we can use the formula for rotational speed (in RPM) which is given by:

RPM = linear speed / circumference of the circle.

The circumference of a circle can be found using the formula:

circumference = 2 * π * radius

Therefore, the RPM of the circular saw is given by:

RPM = 6600 m/min / (2 * π * 0.184 m)

= 565.25 RPM (rounded to the nearest whole number).

User Wendella
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