Recent content by Jim Alexandridis
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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...- Jim Alexandridis
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- Circular Friction Incline
- Replies: 13
- Forum: Introductory Physics Homework Help
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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##- Jim Alexandridis
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- Forum: Introductory Physics Homework Help
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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- Jim Alexandridis
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- Competition distance Kinematics
- Replies: 6
- Forum: Introductory Physics Homework Help