The diameter of a wheel of car is 48cm .if the car travels at an average speed of 3.5km/h find the number of revolutions made by the whole per minute?
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Answers
Answer:
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radius of the wheel = 48/2 =24 cm
distance travelled in one revolution = 2^r
= 2×22/7×24
=44/7 × 24
= 1056/7
= 150.85cm
average speed of a car = 3.5 × 100000/60
= 5833.33cm
distance covered by car in 1 minute = 5833.33cm
number of revolution=distance covered in 1 minute / distance covered in 1 revolution
= 5833.33/150.85
=38.66 revolutions
Hence, per minute each wheel of car makes 38.66 revolutions