Example 2 A particle moves along a circle of radius R. It starts from A and moves in antilockwise direction. Calculate the distance travelled by the particle (a) from A to B (b) from A to C, (c) from A to D (d) in one complete revolution. Also calculate the magnitude of displacement in each case
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Answer: distance travelled will be 2πr² in one comlete revolution
AtoB will be πr²
A to C WILL BE 1/3 ×2πr²
A to D will be same as a to c ∴1/3×2πr²
dislacement in a to b will be 2r
dislacement in one comlet round will be 0
Explanation:
when the article start moving in full circle the distanc will be equal to its circumfrence
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