Recent content by physumr

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    Calculating Net External Force in a Two-Body System with Gravity

    Try a diagram first, develop and equation for each of the masses. Solve for Tension on the second mass and plug it into first equation. From there solve for g.
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    How Can a Swimmer Land Directly Across a River with a Current?

    Make this problem into a triangle and try inverting the angle.
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    What is the minimum stopping distance

    You'll find that it works really well to draw out a diagram on this one. Remember that the block is also traveling at 20 m/s.
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    Physics Problem Help: Chin-Up Force & Velocity

    You should have these formulas, derive an expression for final velocity and then plug in your numbers Kf – Ki + Uf – Ui = Wnc 1/2mVf-1/2Vi+mgyf-mgyi=Wnc