Quiz 2 Solution

Quiz 2 Solution - The position vector, QP r s is given by:...

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MEM202 – Engineering Mechanics: Statics Quiz #2 October 4, 2007 Name: __________________________________ Section: ____________________ A. Multiple Choice. Circle ONE answer that best answers the question. [10 points] 1. If you know just A u s , you can determine the ______ of A s uniquely. a) magnitude of A s b) coordinate angles ( α , β and γ ) c) components (A x , A y and A z ) d) all of the above answer: b) 2. A position vector, PQ r s , is obtained by a) coordinates of Q minus coordinates of P b) coordinates of P minus coordinates of Q c) coordinates of A minus coordinates of the origin d) coordinates of the origin minus coordinates of P 3. A force of magnitude F, directed along a unit vector, u s , is give by F s = ________. a) u F s b ) F u s c) u F s d ) u F s s + answer: a) 4. Two points in 3D space have coordinates of P (1,2,3) and Q (4,5,6) meters.
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Unformatted text preview: The position vector, QP r s is given by: a) k j i ˆ 3 ˆ 3 ˆ 3 + + b ) k j i ˆ 3 ˆ 3 ˆ 3 − − − c) k j i ˆ 9 ˆ 7 ˆ 5 + + d ) k j i ˆ 3 ˆ 3 ˆ 3 + + − answer: b) 5. Force vector, F s , is directed along a line PQ, which is given by: a) PQ r F F s s b ) PQ PQ r r s c) PQ PQ r r F s c ) PQ PQ r r F s answer: c) MEM202 – Engineering Mechanics: Statics B. Please solve the problem below [10 pts] Two forces are applied to an eye bracket as shown in Figure 2. The resultant > R of the two forces has a magnitude of 1000 lbs, and its line of action is directed along the x-axis. If the force, F 1 has a magnitude of 250 pounds, determine the following: a) the magnitude of the force, F 2 , and b) the angle α between the x-axis and the line of action of the force F 2 ....
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This note was uploaded on 08/05/2008 for the course MEM 202 taught by Professor Cook during the Spring '08 term at Drexel.

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Quiz 2 Solution - The position vector, QP r s is given by:...

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