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CBSE Class 11-science Answered

When will three particles situated at vertices of an equilateral triangle chasing each other meet?
Asked by karansawnani | 22 Oct, 2009, 10:15: PM
Expert Answer

Let the particles meet at point O.

The velocity of particle at A in the direction AO = u cos300

From the diagram

cos 300 = (d/2) / AO

AO = (d/2) / cos 300

Therefore, the time taken = AO / u cos300

                                              = (d/2) / u cos2 300

                                              = (2/3)(d/u)

Answered by | 05 Nov, 2009, 09:33: AM
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