Recent content by AnthonyLiardo

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    Graduate Physics / Biomechanics / Weightlifting Question

    My questions is about the bar (not specifically) in this video: I want to know from somebody who has a better mechanical perception than me why the bar has the effect of wobbling back and forth. I think it's because the center of the mass of the system (not including the person) is low...
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    Undergrad What do physicists refer to when they say a object is at a certain speed?

    DrewD is right, if they do not say "moving at __ m/s relative to _______" they probably mean the ground of the earth.
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    Undergrad Can a body have velocity and not move?

    In regards to your reasoning, the formula F = m\cdota applies to the net force on a system. So the formula is really \sumF = m\cdota In regards to the first part, velocity is all relative. We're almost always thinking about being relative to the Earth so sometimes it's confusing. If an object...
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    Polar Coordinates Improper Integral Proofs

    That's exactly what I did for part b. I have this assigned so I need some help on this problem as well. I don't know how to do part c yet. I took the equation from b, and divided by the e^(-(y^2)) integral and all I would have to do is prove that that integral equals √∏. I tried to say that...
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    Solutions of Differential Equations

    The value f subscript x gives you the slope of the line tangent to f in the x direction. EDIT: I think. I learned this like 2 weeks ago.