The blade on a typical table saw rotates at 3450 revolutions

The blade on a typical table saw rotates at 3450 revolutions per minute. Calculate the linear velocity in miles per hour of one of the teeth at the edge of the 12 inch diameter blade.

The linear velocity is ??? miles per hour. (Round to the nearest tenth as needed.)

Solution

The diameter of this blade is 12 inches, so that mean that the circumference of it is:

c = 2(pi) * r = 2 * 3.14 * 6

= 12 * 3.14

= 37.68 inches

The speed of the blade is 3450 RPM.

Hence in 1 minute, it will travel 3450*37.68 = 129996 inch/min

So in 1 hour it will = 129996 * 60 = 7799760 inch/hr

So in 1 hour = 7799760 / 6360 = 1226.37735 mile/hr

Post a comment if you have a doubt.

Rate me well if you like the solution.