06_P31InstructorSolution

06_P31InstructorSolution - 6.31. Model: Visualize: Solve:...

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6.31. Model: The piano is in static equilibrium and is to be treated as a particle. Visualize: Solve: (a) Based on the free-body diagram, Newton’s second law is () net 1 2 2 2 1 1 net 1 2 3 G 3 1 1 2 2 0 N cos cos sin sin xx x yyy y y FT T T T T T F T T T m g θθ == + = + + += Notice how the force components all appear in the second law with plus signs because we are adding forces. The negative signs appear only when we
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This note was uploaded on 12/10/2011 for the course PHYS 1211 taught by Professor Geller during the Fall '09 term at University of Georgia Athens.

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