Section 9.2

Section 9.2 - horizontal component 40.45085 40.5 N vertical...

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12/9/08 7:39 PM Section 9.2 Page 1 of 3 http://www.webassign.net/[email protected]/[email protected] Section 9.2 (Homework) MICKLES BRANDON L MA 242, section 008, Fall 2008 Instructor: April Alston Web Assign Current Score: 20 out of 20 Due: Friday, August 29, 2008 10:02 PM EDT Description Vectors The due date for this assignment is past. Your work can be viewed below, but no changes can be made. 1. [SCalcCC2 9.2.04.] 4/4 points Write each combination of vectors as a single vector. (a) LM LM (b) MK MK (c) NL NL (d) MN MN 2. [SCalcCC2 9.2.16.] 5/5 points Find | a |, a + b , a - b , 2 a , and 3 a + 4 b . a = 4 i - 5 j , b = i + 5 j | a | 6.40312 6.4 a + b 5 5 i + 0 0 j
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12/9/08 7:39 PM Section 9.2 Page 2 of 3 http://www.webassign.net/[email protected]/[email protected] a - b 3 3 i + -10 -10 j 2 a 8 8 i + -10 -10 j 3 a + 4 b 16 16 i + 5 5 j 3. [SCalcCC2 9.2.22.] 4/4 points If a child pulls a sled through the snow with a force of 50 N exerted at an angle of 36 ° above the horizontal, find the horizontal and vertical components of the force.
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Unformatted text preview: horizontal component 40.45085 40.5 N vertical component 29.38926 29.4 N 4. 4/4 points [SCalcCC2 9.2.26.] Ropes 3 m and 5 m in length are fastened to a holiday decoration that is suspended over a town square. The decoration has a mass of 5 kg. The ropes, fastened at different heights, make angles of 52° and 40° with the horizontal. Find the tension in the 3 m rope ( T 3 ), the tension in the 5 m rope ( T 5 ), and the magnitude of each tension. T 3 = -23.124-23 i + 29.597 30 j magnitude = 37.559 38 N T 5 = 23.124 23 i + 19.403 19 j magnitude = 30.1858 30 N 5. [SCalcCC2 9.2.28.] 3/3 points The tension T at each end of the chain has magnitude 25 N. What is the mass of the chain? 12/9/08 7:39 PM Section 9.2 Page 3 of 3 http://www.webassign.net/[email protected]/[email protected] 3.07 3.07 kg...
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Section 9.2 - horizontal component 40.45085 40.5 N vertical...

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