Recent content by chaose

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    Looking for good intro books/texts on dynamical systems

    I'm taking a course in dynamical systems and I'm struggling to grasp some of the concepts. The instructor only occasionally reference the textbook I'm using, which is Differential Equations, Dynamical Systems, and An Introduction to Chaos 2nd Ed. (By Hirsch, Smale, and Devaney). I'm looking...
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    Solve Differential Equation y"+3y'+2y=sin(e^x)

    Homework Statement Integrate [e^(-x)*sin(e^x)]dx ? This is part of the work. I was actually rying to find the general solution to the differential equation y"+3y'+2y=sin(e^x) using the variation of the parameter method. Homework Equations Particular solution Y = u1(x)y1(x) +...
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    What is the Period of Revolution for a Triple Star System?

    thanks, I believe I got it now. My end result was T^2 = (16pi^2 * r^3)/(G*(4M+m))
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    What is the Period of Revolution for a Triple Star System?

    A triple star system consists of two stars each of mass m revoling in the same circular orbit of radius r around a central star of mass M. The two orbiting stars are always at opposite ends of a diameter of the orbit. Derive an expression for the period of the revolution of the stars. I don't...
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    Finding rotational inertia of a yo-yo

    A yo-yo shaped device mounted on a horizontal frictionless axis is used to lift a 30kg as shown. The outer radius R of the device is 0.50m, and the radius r of the hub is 0.20 m. Wen a constant horizontal force F of magnitude 140N is applied to a rope wrapped around the outside of the device...
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    Proving the Limit of (x^2)(sin y)^2)/(x^2+2y^2) at (0,0) without Squeeze Theorem

    Is there anyway to show that the limit for ((x^2)(sin y)^2)/(x^2+2y^2) exists without using the squeeze theorem? I was thinking about the episilon-delta definition of the limit.sorry, I forgot the values. limit (x,y) -> (0,0) of ((x^2)(sin y)^2)/(x^2+2y^2)
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    Rotational inertia of a sphere

    thanks. i didn't think of that
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    Rotational inertia of a sphere

    A bowler throws a bowling ball of radius R=0.11m along a lane. The ball slides on the lane with initial speed V of center of mass = 8.5 m/s and initial angular speed w = 0. The coefficient of kinetic friction between the ball and the lane is 0.21. The kinetic frictional force f acting on the...
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    A Difficult Mechanics Problem (Work-Energy?)

    The string is L = 1m long. Peg P is located d below the support point. When the ball is released from rest (as shown), it swings along the dashed path. WHen it catches on the peg, it swings upward but does not complete a circular path. Instead it leaves its path and strikes the peg. Part A...
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