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Aniket Patra Grade: Upto college level

Three points are located at the vertices of an equilateral triangle of side a.They all start moving simultaneously with velocity v constant in modulus,with the first heading continually the second,the second heading the third and the third heading the first.How many times they will rotate the centre before meeting?

7 years ago

Answers : (1)

Ajay Kumar
34 Points

       The velocity of A is along AB. The velocity of B is along BC. The componenet vel. of B along BA = v cos60 = v/2. Thus, the separationof particles at A and B decreases with the speed = v + v/2 = 3 v/2.

Since this speed is constant, the time taken in reducing the separation AB from a to zero is t = a/(3v/2)

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7 years ago
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