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Unformatted text preview: homework 11 NOORANI, ZOHEB 1 Latest unpenalized work: Feb 11 2008 Mon- day 04:00 (after this date you can not make a perfect score). Work cutoff: Feb 12 2008, 4:00 am. Question 1, chap 5, sect 2. part 1 of 2 10 points A book is at rest on an incline as shown above. A hand, in contact with the top of the book, produces a constant force F hand vertically downward. F hand B o o k The following figures show several attempts at drawing free-body diagrams for the book. Which figure has the correct directions for each force? Note: The magnitude of the forces are not necessarily drawn to scale. 1. weight friction force normal 2. normal friction weight force 3. weight force normal friction 4. weight normal friction force 5. weight force friction normal 6. weight force normal friction 7. weight friction normal force 8. normal force friction weight Question 2, chap 5, sect 2. part 2 of 2 10 points For the normal force exerted on the book by the wedge in the diagram, which force(s) complete(s) the force pair for Newtons third homework 11 NOORANI, ZOHEB 2 law (action-reaction)? 1. the component of gravity pointing per- pendicular to the surface of the incline 2. the component of F hand pointing perpen- dicular to the surface of the incline 3. the normal force exerted on the wedge by the book 4. the component of gravity pointing parallel...
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- Spring '08