Recent content by TaiwanCountry

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    Compound gear train problem (WHY IS IT SO HARD )

    No need to calculate the moment of intertia of gears. It is small compare to the work loss from the other side. If you really need to calculate that. We know the gears sizes d=N/P (N:number of teeth ,P:diametial pitch, d:diateter) The same P is required to compose the gears. We known...
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    Transformation that takes all point on parabola onto unit circle

    {M} [x] = [x']
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    Engineering Nodal Analysis Problem (Basic Circuit Analysis)

    Try Kirchhoff's circuit laws You have three loop. Besides, 8 Ohm:(4+2) Ohm
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    Proving a 2D slider crank mechanism fits the Gruebler's Equation

    Slide crank is also a kind of four bar.(You need 4 vector to describe that,if it has offset.) The block count one. i=4 , j=4 .
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    What is the formula for finding initial velocity from acceleration and distance?

    v = vo + at s = 1/2 at2 v2 = v02+2as choose one
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    How Do You Solve This First Degree ODE Involving Hyperbolic Functions?

    This is an exact equation. dy/dx = Numerator/Denominater D dx - N dy =0 \partialD/\partialy=\partialN/\partialx u (nearly)=D dx + N dy
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    Finding Amplitude in Harmonic Function: Solving for Time t

    Need numerical solve.
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    Block sliding down frictionless semicircle

    ac=gcos(theta)
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    Engineering Modifying rectifier circuit to include LED indicator

    Once the battery recharge,the current flow through the circuit and the LED lighted isn't it ?
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    How Do You Solve a Transport PDE with Initial and Boundary Conditions?

    Hi , How do you do ? you can try this answer. u=f(lnx -ln(1-x)-t) ln() for natural log. The method is here http://en.wikipedia.org/wiki/Method_of_characteristics" ----- ROC(Taiwan) is not PRC. http://en.wikipedia.org/wiki/Taiwan" -----