A bicycle with tires 68cm in diameter travels 9.2km. How many revolutions do the wheels make?

I'm guessing for this question I have to use the work done formula, am I right?

1 Answer
Shubh
Apr 7, 2018

#4219# revolutions

Explanation:

diameter= 68cm
r=#68/2cm=0.34m#
distance travelled=9.2 km=9200 m
circumference of the tire=#2pir=2*3.14*0.34=2.13m#
so, 1rev.#rarr# 2.13 m
2.13m #rarr# 1rev
1m #rarr# #1/2.13rev#
#9200m rarr 1/2.13*9200=4219# revolutions. (approx)

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