Recent content by talisman2212

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    Galileo, inclined plane and geometry.

    You haven't understand the problem at all, anyway I found the solution.
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    Galileo, inclined plane and geometry.

    I must determine the relation between k and the slope of the inclined plane. I am writing at the top of the topic what I have tried, I found g=ksin(θ) this is wrong. I am trying to use the trigonometry of the problem (no sees that??). Can someome really help me to find the relation between k and...
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    Galileo, inclined plane and geometry.

    The equation should say k=sin(θ)g, I am writing above what i have tried. Can someone help me to prove it?
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    Galileo, inclined plane and geometry.

    That's wrong. k is related to the slope of the inclined plane and is independent from the weight. If we use Newton's law we have mk=mgsin \theta \Rightarrow k=gsin \theta I must prove this (without using Newton's law).
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    Galileo, inclined plane and geometry.

    Homework Statement Galileo in seeking to discover the laws governing the motion of bodies under the action of their weight, conducted a series of experiments on inclined planes. Choosing as unit of length the distance traveled by the ball the first unit of time, measuring at subsequent time...
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    Optimizing Time for a Ball on a Sloped Path: Arc or Chord?

    Sorry, is the angular acceleration. How I find T now?
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    Optimizing Time for a Ball on a Sloped Path: Arc or Chord?

    I used the small angle approximation where sin\theta\approx\theta and I'm here: a(t)=-\frac{L}{g}\theta(t) where a(t) is the angular momentum in a given time t. How I will find now that T=2\pi\sqrt{\frac{L}{g}}?
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    Optimizing Time for a Ball on a Sloped Path: Arc or Chord?

    I know that, but our teacher told us to compute it anyway.
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    Optimizing Time for a Ball on a Sloped Path: Arc or Chord?

    I know how to comptute the time in chord but I can't compute the time in the arc.
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    Optimizing Time for a Ball on a Sloped Path: Arc or Chord?

    Our teacher told us that it can be solved without using the pendulum. I have tried lot of things but can't find it.
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    Optimizing Time for a Ball on a Sloped Path: Arc or Chord?

    Homework Statement We let a ball with mass m to slide down under the influence of his weight the path defined by the chord or the path defined by the arc of the circle until the ball reach the lowest point, as it seems from the picture. In which path the ball will make the shorter time to...
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    What's the difference between linear magnification and magnification ?

    look here: http://en.wikipedia.org/wiki/Magnification
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    What mathematics did Perelman use to prove Poicare's conjecture? Do

    What mathematics did Perelman use to prove Poicare's conjecture? Do you know any guide or any book?
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    Numerical Analysis: Weierstrass & Fourier Analysis

    with finite domain, continuous functions and the Euclidean metric.
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