In the design of a supermarket, there arc to be several
Chapter 4, Problem 77(choose chapter or problem)
In the design of a supermarket, there arc to be several ramps connecting different parts of the store. Customers will have to push grocery carts up the ramps and it is obviously desirable that this not be too difficult.The engineer has done a survey and found that almost no one complains if the force directed up the ramp is no more than 20 N. Ignoring friction, at what maximum angle 6 should the ramps be built, assuming a full 30-kg grocery cart?
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