plausibility_4 - Son of Plausibility Practice Set 1 A mass...

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Son of Plausibility Practice Set 1 M 1 j m y ^ A mass m 1 hangs from a string that is wrapped around a pulley of mass M . As the mass m 1 falls with acceleration a y , the pulley rotates. An anonymous source claims that the acceleration of m 1 is one of the following answers. Examine them to determine whether any are plausible. That is, examine each and explain why it could not be correct. (Unless it is.) [1] a y = ( M + m 1 ) g m 1 [2] a y = m 1 g m 1 - M [3] a y = Mg m 1 + 1 [4] a y = m 1
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Son of Plausibility Practice Set 2 ^ m m 1 2 θ i In the system as drawn, there is no friction, and the mass of the pulley is negligible. The acceleration of mass m 2 is claimed to be one of the following. They can’t all be correct, so show what is wrong with most (or all) of them. That is, analyze all these proposed solutions and determine whether they are reasonable. [1] a x = m 2 sin θ - m 1 m 2 + m 1 cos θ g [2] a x = m 2 cos θ + m 1 m 2 sin θ + m 1 g [3] a x = m 2 sin θ - m 1 cos θ m 2 + m 1 g
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Son of Plausibility Practice Set 3 m ^ j i x k μ θ 2 1 m ^ The mass m
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This note was uploaded on 01/08/2012 for the course PHYSICS 205 taught by Professor Galeazzi during the Fall '11 term at University of Miami.

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plausibility_4 - Son of Plausibility Practice Set 1 A mass...

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