the diameter of a driving wheel of a car is 70 cm how many revolutions per minute must the wheel make in order to keep the speed of 66 km per hour
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Hey,,
diameter =70cm
speed=66km/hr = 110m/min
Distance =speed *time
=(110*10)m
Now,
circumference =2πr
=2*22/7*70/2
=220cm
Therefore,
no. of revolutions = distance/ circumference
=11000/220
=50.
Hope this helps you!!
diameter =70cm
speed=66km/hr = 110m/min
Distance =speed *time
=(110*10)m
Now,
circumference =2πr
=2*22/7*70/2
=220cm
Therefore,
no. of revolutions = distance/ circumference
=11000/220
=50.
Hope this helps you!!
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