circumference = 2π(11) = 22π inches
so in 1 minute a point on the rim covers
31(22π) or appr 2142.566 inches
since linear velocity = distance/time
.......
your turn.
A wheel with a 22 inch diameter is turning at the rate of 31 revolutions per minute. What is the
linear speed of a point on the rim, measured to the nearest inch per minute?
4 answers
diameter = 11, not radius
It said diameter = 22,
so radius is 11
I used 2πr = 2(11)π = 22π
so radius is 11
I used 2πr = 2(11)π = 22π
Ouch - I must be going Blind!
2 answers