# week4-3 - 1D-05 Twirling Wine Glass m v Is it possible .to...

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2/2/2012 Physics 214 Fall 2010 1 1D-05 Twirling Wine Glass g Same as m v string Is it possible .to keep the water in the cut upside down ? N + mg = mv 2 /R N > 0 What ‘s the minimum speed to keep the water from spill? When N = 0, Vmin= ࢍࡾ If V < Vmin, it can not reach the top.

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2/2/2012 Physics 214 Fall 2010 2 A Ferris wheel with radius 12 m makes one complete rotation every 8 seconds. What speed do riders move at? Ch 5 CP 2 F cent A). 56.52 m/s B). 9.42 m/s C). 18.84 m/s D). 4.71 m/s
2/2/2012 Physics 214 Fall 2010 3 A Ferris wheel with radius 12 m makes one complete rotation every 8 seconds. What is the magnitude of their centripetal acceleration? Ch 5 CP 2 F cent A). 7.40 m/s 2 B). 9.40 m/s 2 C). 3.70 m/s 2 D). 14.80 m/s 2

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2/2/2012 Physics 214 Fall 2010 4 A Ferris wheel with radius 12 m makes one complete rotation every 8 seconds. For a 40 kg rider, what is magnitude of centripetal force to keep him moving in a circle? Is his weight large enough to provide this centripetal force at the top of the cycle? Ch 5 CP 2 F cent A). 396 N, weight is large enough. B). 1028 N, weight is large enough C). 200 N, weight is large enough D). 296 N, weight is large enough E). 296 N, weight is NOT large enough
Physics 214 Fall 2010 5 A Ferris wheel with radius 12 m makes one complete rotation every 8 seconds. What is the magnitude of the normal force exerted by the seat on the

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## This note was uploaded on 02/05/2012 for the course PHYS 214 taught by Professor Staff during the Spring '08 term at Purdue University-West Lafayette.

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week4-3 - 1D-05 Twirling Wine Glass m v Is it possible .to...

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