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31) A safe weighing 2000 N is to be lowered at constant Speed down skids 4 m long, from a truck 2 m high.
31) A safe weighing 2000 N is to be lowered at constant Speed down skids 4 m long, from a truck 2 m high. a) If the coefficient of sliding friction between the safe and skids is 0.3, will the safe need to be pulled down or held back? b) How great a force parallel to the skids is needed?
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a The safe will need to be pulled down because the force of gravity acting downwards is greater than ...
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Fundamentals of Physics
Authors: Jearl Walker, Halliday Resnick
8th Extended edition
471758019, 978-0471758013
