What is the linear velocity in miles per hour of the tip of a lawnmower blade spinning at 2400 revolutions per minute in a lawnmower that cuts a path that is 26 inches wide?
Circumference is 2(pi)r, since the path is 26in wide, the radius is 13in. C=26(pi)=81.68in. So the tip travels the circumference 2400 times in one minute, which is equal to 196035.4in per min. this is equal to 185.64mph.
