How long will you chase?

A boy runs on a circular path of radius R=28 meters R=28\text{ meters} with constant speed u=4 m/su=4 \text{ m/s}.

Another boy starts from the center of the circle to catch the first boy. The second boy always moves towards the first one. and maintains a speed of v=4 m/sv = 4\text{ m/s}. How long will the chase last in seconds?

Details and Assumptions:

1) Ignore air friction.

2) Take π=227\pi = \dfrac{22}7.


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