Question

What is the linear velocity in miles per hour of the tip of a lawnmower blade spinning at 3000 revolutions per minute in a lawnmower that cuts a path that is 24 inches wide?

Answer 1

Answer:v = ωr

v = speed in miles per hour (mph)

is the angle's speed in radians per hour.

r is the radius in miles.

(2400-rpm/60 minutes) =

(two radians per rev) Equals __ radians per hour

r=16 inches/2 = (8 inches)

(1/5280 miles/ft) (1/12 feet/in) = ______ miles

v = r = _ miles per hour

Explanation:

v = ωr

v = speed in miles per hour (mph)

is the angle's speed in radians per hour.

r is the radius in miles.

(2400-rpm/60 minutes) =

(two radians per rev) Equals __ radians per hour

r=16 inches/2 = (8 inches)

(1/5280 miles/ft) (1/12 feet/in) = ______ miles

v = r = _ miles per hour