ICSE Class 10 Answered
a car is travelling at 60 km/h. its wheels all of the same size makes 1000 revolutions per minute .find the diameter of the wheel.
Asked by smitha nair | 20 Feb, 2014, 09:02: AM
Expert Answer
Let 'd' be the diameter of the wheel of the car.
Since the circumference of one wheel is equal to one revolution, we have
Since the speed of the car is 60 km/h, in one hour it travels 60 km.
That is, the car travels 1 km in one minute.
That is, the speed of the car is 1 km per minute.
In one minute the distance covered by the car = 1 km.
That is,
Answered by | 20 Feb, 2014, 12:38: PM
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