In 2527, a 5-pound block sits on a plank of wood. If one end of the plank is raised, the
Chapter 12, Problem 25(choose chapter or problem)
In 2527, a 5-pound block sits on a plank of wood. If one end of the plank is raised, the block slides down the plank. However, friction between the block and the plank prevents it from sliding until the plank has been raised a certain height. It turns out that the sliding force exerted by gravity on the block is proportional to the sine of the angle made by the plank with the ground. Find a formula for F = f(), the sliding force (in lbs) exerted on a block if the plank makes an angle of with the ground. [Hint: What is sliding force if the plank is horizontal? Vertical?]
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