Physics · Circular Motion
If the radius of a circular path is r and a particle makes n revolutions in 1 second, what is the distance covered by it in 1 second?
- 14πrn
- 2πr^2n
- 32πrn✓
- 4πrn
Correct answer
2πrn
Explanation
सही उत्तर:
- (B) 2
𝜋
𝑟
𝑛
2πrn
मुख्य बिंदु एवं स्पष्टीकरण:
त्रिज्या
𝑟
r वाले वृत्ताकार मार्ग की परिधि
𝜋
𝑟
2πr होती है, जिसका अर्थ है कि एक चक्कर में कण द्वारा चली गई रेखीय दूरी
𝜋
𝑟
2πr है।
चूंकि कण 1 सेकण्ड में
𝑛
n चक्कर लगाता है, अतः 1 सेकण्ड में तय की गई कुल दूरी = (एक चक्कर की दूरी
× चक्करों की संख्या) =
𝜋
𝑟
𝑛
𝜋
𝑟
𝑛
2πr×n=2πrn होगी।
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