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Physics 11 Online
OpenStudy (anonymous):

in an amusement park ride, a small child stands against the wall of a cylindrical room that is then made to rotate. The floor drops downward and the child remains pinned against the wall.If the radius of the device is 2.15m and the relevant coefficient of friction between the child and the wall is 0.400,what minimum speed is the child moving if he is to remain pinned against the wall?

OpenStudy (anonymous):

minimum speed=(2.15*9.8/0.4)^1/2 that is minimum speed=(radius*acceleration due to gravity/coefficient of static friction)^1/2|dw:1314756475601:dw|

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