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Prelim1CommonProblems

Prelim1CommonProblems - Common Problems on Prelim 1 Q1...

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Sheet1 Page 1 Common Problems on Prelim 1 Q1: - Didn't draw 2 Free Body Diagrams to solve for all the tensions Q2: - Wrong reactions at wall (for frictionless contact there is only normal reaction force) Q3: - Ball and socket joint reaction wrong (a lot thought it would be only in y-direction) or missing - Using sum of forces to calculate (wrong either because above reaction was wrong, or totally ignored the reaction) - Cross product mis-calculated Q4: - Moment was often taken at E, this is fine, but the r was calculated incorrectly. They need to take M = r_E/K x R, where poin
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