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A cube of side l rests on a rough floor. It is subjected to a steady horizontal pull F, exerted a distance h above the floor as shown in Fig. 12–84. As F is increased, the block will either begin to slide, or begin to tip over. Determine the coefficient of static friction μs so that (a) the block begins to slide rather than tip; (b) the block begins to tip. [Hint: Where will the normal force on the block act if it tips?)
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