PHYS
quiz3

# quiz3 - UD Phys207WD9 Quiz 3 Name You must show all of your...

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Unformatted text preview: UD Phys207WD9 Quiz 3 Name You must show all of your work for credit. Include units with your numerical answe . A block of mass m=5kg is placed at rest on a smooth inclined plane of angle 9:30“. a) Draw a FBD. r b) Apply Newton's second law to the block. c) What is the acceleration of'the object down the inclined plane? d.) Determine the force P pointed parallel to the inclined plane that would be needed to keep the object at rest. e) Now we adjust the inclined plane so that the angle 9 is doubled. With the same force P still parallel to the inclined plane what is the acceleration of‘the block? FLﬂjCJXQ C) Qtﬂsne ="frq"‘/S‘l F” ( PM) UD ?hy5207W09 Quiz 3 Name % You must show all of your work for credit. Include units with your numerical answers. A -1 0.0 kg block is pulled along a horizontal frictionless ﬂoor by a cord that exerts a force P=20N at an angle of 30° relative to the horizontal. a) Draw a FBD for the block. b) Apply Newton's second law to the block. c] What is the acceleration of the block? d) If the force P is slowly increased, what is the value just before the block is lifted off of the ﬂoor? (The block just begins to lift off the ﬂoor when the FN =0N.) ‘ e) What is the acceleration of the block just before it is lifted off of the floor. 3/; R30 ? ’“+PS“ ...
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