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प्रश्न
The number of revolutions made by a circle of radius r to cover a distance s is ______.
रिकाम्या जागा भरा
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उत्तर
The number of revolutions made by a circle of radius r to cover a distance s is `underlinebb(s/(2πr))`.
Explanation:
Given: A circle (wheel) of radius r rolls a distance s.
Step wise calculation:
1. Distance in one revolution = circumference = 2πr.
2. Number of revolutions = Total distance ÷ Distance per revolution
= s ÷ (2πr)
= `s/(2πr)`
The number of revolutions = `s/(2πr)`.
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