What is the magnitude of the upward force exerted by the chain on the boulder as it rises out of the quarry? (include units with answer)?

A 630 kg boulder is raised from a quarry 125 m deep by a long uniform chain that has a mass of 492 kg. This chain is of uniform strength, but at any point, it can support a maximum tension no greater than 3.50 times its weight without breaking. What is the magnitude of the upward force exerted by the chain on the... show more A 630 kg boulder is raised from a quarry 125 m deep by a long uniform chain that has a mass of 492 kg. This chain is of uniform strength, but at any point, it can support a maximum tension no greater than 3.50 times its weight without breaking. What is the magnitude of the upward force exerted by the chain on the boulder as it rises out of the quarry? (include units with answer) The correct answer is NONE of the following: 663.69 N, 16875.6 N, 6180.3 N, 3304.98 N, 16881.6 N, and 3087 N. The maximum constant acceleration the boulder can have and still get out of the quarry is 5.246 m/s^2.
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