Quiz7 - up down f r up down Physics 7B-A/B Quiz # 7 DL sec:...

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Unformatted text preview: up down f r up down Physics 7B-A/B Quiz # 7 DL sec: Name: 3/5/08 last, frst Codes: grading use only up down f r up down 1)Abicyclewheelismountedwithitsaxleverticalsothattheplaneofthewheelishorizontalas shownbelow.Themomentofinertiaofthewheelis0.24kgm 2 andtheradiusis0.135m.The wheelisinitiallyspinningwithanangularspeedof3.0rad/sinthedirectionshown.Astudent pushesawoodenblockagainsttheouterrimofthewheelwithanormalforce(normaltothe wheel)of6.0Nuntilthewheelcomestorest.Thekineticcoefficientoffrictionbetweenthe woodblockandthewheelis=0.5.Thedirectionofthevectorsshould correspondtothedirectionsinthediagram. a)(10%)Findthemagnitudeoftheinitialangularmomentum. L=IL= (0.24kgm 2 )(3/s)=0.72kgm 2 /s b)(10%)Findthedirectionoftheinitialangularmomentum.b)(10%)Findthedirectionoftheinitialangularmomentum....
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Quiz7 - up down f r up down Physics 7B-A/B Quiz # 7 DL sec:...

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