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Jan
17
answered Force and Torque Question on an isolated system
Jan
17
comment Does a scale model with 1/2 the linear length have 1/8 the mass?
I think this is the answer to a different question. What bike, what velocity??
Jan
17
awarded  Supporter
Jan
17
comment Master Field Large N limit
I found a paper that derives master fields for gauge theory (section 2.5) and for HP gauge theory (section 3.4), respectively. [Link to pdf](cds.cern.ch/record/294104/files/9601022.pdf)
Jan
17
comment If a cart hits a wall, does the weight of it affect how it moves, when the center of gravity is constant?
In your question you didn't mention that you want to add weight to the system. However, it does not matter: Adding mass does not change the angular momentum. If you increase m_i, you will decrease sqrt(v_i*v_i) (keep in mind that r_i and v_i are vectors). The angle of the back wheel will be smaller, but angular momentum is unchanged.
Jan
16
answered If a cart hits a wall, does the weight of it affect how it moves, when the center of gravity is constant?
Jan
16
awarded  Teacher
Jan
16
suggested suggested edit on Aren't all physical relations non-linear?
Jan
16
answered Why does smoke go inside the car if the back door is open?