ch08-p085 - F machine = mg sin θ + k mg cos = 372 N. Thus,...

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85. (a) Resolving the gravitational force into components and applying Newton’s second law (as well as Eq. 6-2), we find F machine mg sin θ μ k mg cos = ma . In the situation described in the problem, we have a = 0, so
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Unformatted text preview: F machine = mg sin θ + k mg cos = 372 N. Thus, the work done by the machine is F machine d = 744 J = 7.4 × 10 2 J. (b) The thermal energy generated is k mg cos d = 240 J = 2.4 × 10 2 J....
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This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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