Recent content by Jim Alexandridis

  1. Jim Alexandridis

    A problem from a physics national competition

    So we have an incline of slope θ, which is I circular motion around a pole with steady angular velocity ω. A body on the incline is at distance r frome the pole and stays at rest. Calculate the minimum friction coefficient so that it stays at rest. So I analyzed the forces in 2 different...
  2. Jim Alexandridis

    Kinematics problem from a competition: Will the 2 sliding boxes collide?

    I believe that for the collision to happen it has to be : ##S_{1}+S_{2}\ge S##
  3. Jim Alexandridis

    Kinematics problem from a competition: Will the 2 sliding boxes collide?

    The distance covered by the first box is :s1max=v²/2|a|=v²/2μg where a=-μg by second newtons law Similarly S2max=(2v)²/2|a|=4v²/2μg It gas to be s1max+s2max≥S => v²/2a +4v²/2a ≥s => 5v²≥2aS =>v²≥ 2μgS/5=> v≥√(2μgs/5) But this is in the possible solution, am I wrong somewhere? I appreciate your help
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