A wheel on a farm tractor has a 23 inch radius. if the tractor is driven at a constant speed of 22 mph, how many revolutions per MINUTE does the wheel make? NEED HELP URGENT
+33657 22 mph = 22/60 miles per minute = 22*1760/60 yardsper minute = 22*1760*3/60 feet per minute = 22*1760*3*12/60 inches per minute = 23232 inches per minute.
One revolution is a distance of 2*pi*23 inches, so that's 46pi inches per revolution
The number of revolutions per minute at 22 mph is therefore 23232/(46pi) revolutions per minute ≈ 161 rpm
