Spiderman uses his spider webs to save a runawaytrain,
Chapter 7, Problem 7.54(choose chapter or problem)
Spiderman uses his spider webs to save a runawaytrain, Fig. 7-27. His web stretches a few city blocks before the104-kg train comes to a stop. Assuming the web acts like aspring, estimate the spring constant.FIGURE 7-27 54.
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