the wheel of am audi car has a diameter of 33 inches the ramesh drive the car at the speed 180 km per hour the find the number of revolution made by the wheel in 11 minutes
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Answer:
Diameter of car wheel is 84 cm
Circumference of the wheel = 2*pi*r
= 2*22*.42/7
= 2.64 meter
Speed of the car is 72 kmph
Speed in m/sec is 72*5/18 = 20 m/sec
Distance covered in 11 minutes = 20*11*60 = 13200 meter
Number of revolutions in 11 minutes = distance covered in 11 minutes / circumference of the wheel
= 13200/2.64
= 5000 revolutions
Answered by
2
Diameter of car wheel is 84 cm
Circumference of the wheel = 2*pi*r
= 2*22*.42/7
= 2.64 meter
Speed of the car is 72 kmph
Speed in m/sec is 72*5/18 = 20 m/sec
Distance covered in 11 minutes = 20*11*60 = 13200 meter
Number of revolutions in 11 minutes = distance covered in 11 minutes / circumference of the wheel
= 13200/2.64
= 5000 revolutions
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