A black box is bolted to a beam with a cable as shown in the following fi
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A black box is bolted to a beam with a cable as shown in the following fi gure. Consider the box as the system. During the process, the box raises in height as the cable goes into the box by an unknown mechanism. Assume that there is some friction associated with this process.
(a) During the process, is the change in total energy of the box: greater than zero, equal to zero, less than zero, or cannot tell? Explain.
(b) During the process, is the change in entropy of the universe: greater than zero, equal to zero, less than zero, or cannot tell? Explain.
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