A homogeneous thin rod, length L= 1m, can rotate freely in the vertical plane through a horizontal smooth shaft O at one end. At first, the fishing rod was in a vertical position. Now a bullet is shot into the thin rod horizontally at the speed of v =10m/s.
Let the distance from the incident point to the O point be 3L/4 and the mass of the bullet be 1/9. First, it can be determined that acceleration A is a function of time and speed. V=∫adt (time from 0 to t), v = CT 3/3, and displacement X=∫vdt (time from 0 to t) can be solved by integration.
Extended data:
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