Reach for the Summit - P-S1-A2

As shown above, a rod with length ll is leaning against the vertical wall. The lowest point of the rod, AA is moving right at velocity v0v_0, at this time, the angle of the rod and the ground is α\alpha.

Then there exists a point on the rod which has the minimum magnitude of velocity. Find the minimum velocity.

Take α=30°\alpha=30 \degree, and the minimul velocity is λv0\lambda v_0. Submit 10000λ\lfloor 10000 \lambda \rfloor.


Reach for the Summit problem set - Physics

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