A potter is making a spherical vase on a potter’s wheel. The vase has a mass...

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Physics

A potter is making a spherical vase on a potter’s wheel. Thevase has a mass of 0.8 kg and a radius of 4.0 cm and the potter’swheel has a mass of 20.0 kg and a radius of 20.0 cm. The vase iscentered on the wheel. While working on the vase, the wheel andvase rotate at 1 revolution every four seconds. When finished withthe vase, the potter slows the wheel (and vase) by applying anormal force at the edge of the wheel. If she brings the wheel to acomplete stop in 30 s and the coefficient of friction between herhands and the wheel is 0.45, what is the magnitude of the normalforce between each hand and the wheel.

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