Midterm 1 Review Questions - PHY-7A GSI: Dimitri...

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PHY-7A GSI: Dimitri Dounas-Frazer Review problems for Midterm I Problem 1. Two boxes, one on top of the other, are at rest on a level surface. There are two di±erent coe²cients of static friction in this problem: one between the surface and the bottom box, and another between the two boxes. Call these μ and μ 2 , respectively. (a) What is the maximum horizontal force F with which I can push horizontally on the top box such that neither box slips? Think carefully about the cases where μ is much smaller than μ 2 and vice versa. (b) Repeat the previous part, but suppose I push on the bottom box instead. M m Problem 2. You’ve just ³nished college and you’re moving from Denver to Berkeley for grad school. A minimalist at heart, all your worldly possessions (climbing shoes and physics books) ³t into just one box. You load this box onto the open bed of a pickup truck, jump in the driver seat, and put the pedal to the metal all the way to California, baby! (a) Find the maximum acceleration
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Midterm 1 Review Questions - PHY-7A GSI: Dimitri...

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