【非選題】 1.1 * The 200 Ih block is at rest on the plane shown in Figure 1. The coefficient of friction between the block and the plane is 0.45. The force I) is applied gradually (逐 漸）unt.il the block begins to move. If the block is to neither tip (傾斜）nor slide, determine the maximum force P that can be applied. (20%)
【非選題】 3.3. The 20-% slender rod shown in Figure 3 is rotating in the vertical plane, and at the
instant shown it has an angular velocity of r7) = 5 rad/s, Determine the rod's angular acceleration and the horizontal and vertical components of reaction at the pin at this instant. (35%)
非選
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