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A 750.0 kg boulder is raised from a quarry 125 m deep by a long uniform chain having a mass of 575 kg. This chain is oof uniform strength, but at any point can support a max tension no greater than 2.50 times its weight with out breaking. What is the max acceleration the boulder can have and still get out of the quarry and how long does it take to be lifted out at max acceleration if it started from rest?

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