Unformatted text preview: determine the speed of the skier at the bottom of the slope. g Δ h + 1/2(v f 2 – v i 2 ) = 0 v f = sqrt[2gDh] = sqrt[(2)(10)(300)] = sqrt[6000] ≈ 77 m/s h θ m 2. The potential energy graph shown here is similar in shape to the 2d Higgs potential in particle physics. The horizontal axis here is given in meters and the vertical axis in Joules. a) At which point ( A or B ) would the force be greatest? Clearly explain your reasoning. Point A would have a greater force than point B. Force is related to slope, and the slope at B=0 whereas the slope at A is >0. [Note that it doesn’t matter which direction you think the force is (pos or neg slopes), just that the magnitude is bigger.] b) In which direction is the force at point C ? Explain . A C B The force at point C is to the left. Force is always in the direction to locally decrease the PE....
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This note was uploaded on 04/04/2011 for the course PHY 7A taught by Professor Pardini during the Spring '08 term at UC Davis.
 Spring '08
 PARDINI

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