A wheel is rolling with a speed of 9.55 miles per hour. How many revolutions per minute is the wheel completing if its diameter is 8.5ft?

pancha3

pancha3

Answered question

2021-03-04

A wheel is rolling with a speed of 9.55 miles per hour. How many revolutions per minute is the wheel completing if its diameter is 8.5ft?

Answer & Explanation

dieseisB

dieseisB

Skilled2021-03-05Added 85 answers

The formula:
v=rw
First, convert to ft/min:
v=9.55mihr×5280ft1mi×1hr60min=840.4 ft per min
Substitute r=d2andv=840.4:
840.4=(8.52)w
w=840.24.25 rad per min
Convert to rev per min:
w=840.24.25×12π
w31.5 rev per min

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