A large box of mass M is at rest on a horizontal table whose surface is rough; the coefficient of static friction between the table and the block is μ. The box is connected by a taut string to a small block of unknown mass m, initially held horizontally as shown and then released.
1. Assuming the string remains taut and the large box M does not slip on the table, what is the tension in the string just before block m strikes the table? Answer in terms of M, m, g, and μ (mu)
2. Suppose now that the large box begins to slip just before the block strikes the wall. What is the mass of the block? Answer in terms of M, g, and μ (mu).
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