Q.N.Three particles are placed at the corner ofequilateral triangle ha

1.	Q.N.Three particles are placed at the corner ofequilateral triangle having side 'a'. Each particlemoves with constant speed 'y in such a way that 1+2; 2-+3; and 3-1 then after what time they willmeet.
Answer» Answer: Explanation: Figure above SHOWS the initial DIRECTION of velocities of A, B and C i.e. when A, B,C are at the ends of an equilateral triangle of side 'a' each. The velocity of A is along AB. So, as B moves, then the direction of velocity of A changes continuously towards the direction of B. Similarly, the velocity of B is along BC and velocity of C is along CA. The component of velocity of B along BA = V cos60o = So, the effective SPEED with which A and B approach each other Time taken in reducing the SEPARATION AB from 'a' to zero is Since all three particles A, B and C move with same constant speed v, hence C will also meet A and B at the same time.

Q.N.Three particles are placed at the corner ofequilateral triangle having side 'a'. Each particlemoves with constant speed 'y in such a way that 1+2; 2-+3; and 3-1 then after what time they willmeet.

Answer»

Answer:

Explanation:

Figure above SHOWS the initial DIRECTION of velocities of A, B and C i.e. when A, B,C are at the ends of an equilateral triangle of side 'a' each.

The velocity of A is along AB. So, as B moves, then the direction of velocity of A changes continuously towards the direction of B.

Similarly, the velocity of B is along BC and velocity of C is along CA.

The component of velocity of B along BA = V cos60o =

So, the effective SPEED with which A and B approach each other

Time taken in reducing the SEPARATION AB from 'a' to zero is

Since all three particles A, B and C move with same constant speed v, hence C will also meet A and B at the same time.

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