the radius of wheel of a bicycle is 35cm . how many turns Will it revolve while covering 55m
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Step-by-step explanation:
Given:
The radius of a wheel =r=35 cm=0.35 cm.
The speed it must keep =s=55 km/h=55×1000/60 m/min=916 m/min
To find out:
The number of revolution =n, it makes per minute to maintain that speed.
Solution:
The circumference =C of the wheel =
2πr=2×22/7 ×0.35m =2.2m =C
The distance the wheel covers in 1 min=d=916m.
Now the distance =d
covered by a wheel in one revolution =
the circumference of the wheel.
∴ Here the number of revolution =
n=Cd=916/2.2= 416 (approx)
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