In an old-fashioned amusement park ride, passengers stand inside a 4.9-m-diameter hollow steel cylinder with their backs against the wall. The cylinder begins to rotate about a vertical axis. Then the floor on which the passengers are standing suddenly drops away! If all goes well, the passengers will "stick" to the wall and not slide. Clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. A sign next to the entrance says "No children under 30 kg allowed."(adsbygoogle = window.adsbygoogle || []).push({});

What is the minimum angular speed, in , for which the ride is safe?

I have no idea how to go about this problem.

I know angular velocity is w = v/r

but i just dont know how to apply it to get the answer to this question. someone help please!!

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# Finding the angular speed in rpm

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