A safe weighing 2,000 N is to be lowered at constant speed, down skids 4m long, from a truck 2m high. If the coeff. of friction is 0.3, find the force required parallel to the skids is nearly

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A safe weighing 2,000 N is to be lowered at constant speed, down skids 4m long, from a truck 2m high. If the coeff. of friction is 0.3, find the force required parallel to the skids is nearly






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