exam_1_sol_ns_MC_part

# exam_1_sol_ns_MC_part - CE 2450 STATICS SCAN SHEET...

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Unformatted text preview: , CE 2450 STATICS SCAN SHEET QUESTIONS: I . What vector math would be performed to get an area ofa parallelow if vectors P and Q are two adjacent sides of it? a) Mixed Triple Product c) Dot Product d) Vector Sum e) Parallelogram Law t) None of the above 4. What vector math would be performed to get the volume of a parallelepiped with vectors P, Q, and S as its sides? ﬂ Mixed Tri a to Product 1)) Cross Product c) Dot Product d) Vector Sum _ e) Parallelograrn Law t) None of the above 7. Any given force acting on a particle can be replaced by two or more forces which have the same effect on the particle. c) None of the above 9. In the homework problem 3.24 (see ﬁgure), the moment about C due to the force at A is the same as the moment about C due to the force acting at B. c) None of the above Pﬂdclfm‘olz‘fﬂktblmsﬁwmﬁ EXAM 1 FALL 2009 QUICK ANSWER: 1-10 (10 pts.) 2. What vector road: would be performed to get a vector perpendicular to the plane two other vectors lie in? a) Mixed Triple Product c) Dot Product d) Vector Sum e) Parallelogram Law f) None of the above 5. What vector math would be performed to get the commnent of a vector: that is parallel to a ﬁciﬁc direction? ' a) Mixed Triple Product 13) Cross Product W; I ' ector Sum e) Parallelogrmn Law f) None of the above 3. Rule for direction cosine angles (6): a 0 E B < " ° ) 0 S 9 S 180 ° c Cosine and ' ratios are used. NAME: )4" 3. What vector math would be performed to replace several vectors with an equivalent vector? a) Mixed Triple Product b) Cross Product c) Dot Product e) Parallelograrn Law 1) None of the above 6. “The moment about a given point 0 of the resultant of several concurrent forces is equal to the sum of the moments of the various forces about the same point 0.” This is called: a Parallelogram Law ‘3 c) Principle 0 ransrnissibility (1) Mixed Triple Product e) None of the above bleeatézdafé Fwd TEXT d) The angle references a commit of the - vector from a positive reference axis. j e) All except b) 0 None of the above 10. In the same ﬁgue for 3.24 and from homework problem 3.29, the perpendicular distance from point D to a line drawn through points A and B is the same as the perpendicular distance from point C to a line drawn through points A and B. a) True (DEED I: one of the above (313.2450 STATICS EXAM 1 FALL 2009 NAME: SCAN SHEET QUESTIONS CONTINUED QUICK CALCULATION: 11 - 14 (15 pts.) 1 1. (5 pts) From the figure of a brake pedal (shown at right) determine the moment of? about B, knowing P = 450 N. a) —1 17 Nm u“? e —-104Nrn d) --54Nm e) None of the above 12. (5 pts) Three coplanar forces are in equilibrium on the surface of a steel plate, as shown. Two of the forces are known to he 10 N. What is the angle, 0, of the third force? a) 7.5“ b) 26.7“ 0 533° 6: None of the above 13. (3 pts) A 600-113 crate is supported by the rope-andupulley arrangement shown. DeteImine the tension in the rope. Neglect the weight of the pulleys and friction forces. . I 200 1b c) 25011) CI) 3001b 6) None of the above 14. (2 pts) What is the resuItant of the system of forces Show? 3’ F—g F,=1§I+25i—1ak l+EfE :35. :9 1511—39-10 :2; F2=2UI—5]+1l5k le-albzs.“5++o :60 x Egg. 4 ear/5'50 =55 Pa = —1Ui+ 461+ 50!: R : -20i + 371+ 40!: (8.2.0) ...
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## This note was uploaded on 04/26/2010 for the course CE 2450 taught by Professor ? during the Spring '08 term at LSU.

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exam_1_sol_ns_MC_part - CE 2450 STATICS SCAN SHEET...

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