A particle is moving in a circular path of radius r . What would be the distance travelled by the particle after it completes two and a half round of the circle?
(a) 2r
(b) r
(c) 4r
(d) 5r
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Answer:
(d) is the correct answer
Explanation:
The distance covered by the particle in one round = 2πr
Total distance covered in 2.5 rounds of the circle = (2πr × 2) + πr
= 5πr
Hence, the total distance covered in 2.5 rounds of the circle is 5πr
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