72Math1700.pdf Masteringphysics Assignme MasteringPhysics: Hwy c x K- O e sessio

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72Math1700.pdf Masteringphysics Assignme MasteringPhysics: Hwy c x K- O e session masteringphysicsoon/myotitemview?assignmentproblemID 72406580 Physics 2750 Spring 2017 (University Physics I) Exercise 924 Exercise 9.24 An electric turntable 0740 m in diameter rotating about a fxed ais with an initial angular velocity of 0.300 rev/s. The angular acceleration is 0897 rev/s Part C What the tangential speed of a point on the tip of the blade attmet 0.196 s? 2.21 m/s Incorrect: Try Again: 4 attempts remaining Part D What is the magnoude of the resultant acceleraton of a point on the tip of the blade at time t 0.195 s C My Answers Give O Ask me anything TOUC

Explanation / Answer

Part C

Initial speed=0.3*2pi*0.37=0.67 m/s

angular acceleration=0.397 rev/s(2)=2.5 radian/s(2)

a=accleration=angular acceleration*radius=0.923 m/s(2)

v=Tangential speed=initial speed+(a*t)=0.88 m/s

ar=Radial accleration=(v*v)/r=2.08 m/s(2)

Resultant accleration=sqrt((a*a)+(ar*ar))=2.28 m/s2

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