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ENGR 211 Recitation 2

# ENGR 211 Recitation 2 - downward 4 What is the unit vector...

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ENGR 211 Fall 2007 Recitation 2 4 & 5 October 2007 1. Find the resultant force vector F = F 1 + F 2 and its magnitude to 2 significant figures. F 1 = 20 i – 15 j + 35 k F 2 = -25 i + 12 j + 24 k 2. Find F 1 F 2 for the vectors in Problem 1 and the angle between them. 3. Given that F 1 = 100 lb & F 2 = 55 lb, find the angle θ so that the resulting force F 1 + F 2 points vertically
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Unformatted text preview: downward. 4. What is the unit vector that describes the direction of F 1 = 20 i – 15 j + 35 k ? 5. The rope is pulling on the embedded pipe as shown with a force vector F . a. What is the angle between the pipe and the rope? b. What is the magnitude of the component of F that is parallel to the pipe? A...
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