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You're driving your pickup truck around a curve with a radius of 22meters. A box in the back of the truck is pressed up against the wall of the truck.
-How fast must you drive so that the force of the wall on the box equals the weight of the box?

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Noe Valencia

  1. If the centripetal force on the box equals the weight,
    V^2/R = g
    V = sqrt(R*g) = 14.7 m/s

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    drwls

  2. V^2/R = gu
    V = sqrt(R*g*u) = 13.133 m/s
    u is the coefficent of static friction. Since this is steel on steel, u=0.1

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    Alex

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