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The figure shows a uniform crate resting on a horizontal surface. The crate has a square cross section and a weight of W = 580 N, which is uniformly distributed. At the bottom right edge of the surface is a small obstruction that prevents the crate from sliding when a horizontal pushing force is applied to the left side. However, if this force is great enough, the crate will begin to tip and rotate over the obstruction. Concepts:
(i) What causes the tipping-the force or the torque that it creates?
(ii) Where should be applied so that a minimum force will be necessary to provide the necessary torque? In other words, should the lever arm be a minimum or a maximum? Calculations: Determine the minimum pushing force that leads to tipping. |
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