# physics

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An amusement park ride consists of a large vertical cylinder that spins about
Figure P6.61
its axis fast enough such that any person inside is held up against the wall
persons who walk around on the inner wall of the outer rim. Find the rate of rotation of the wheel (in revolutions
when the floor drops away. The coefficient of static friction between person
per minute) that will produce this effect.
and wall is μ , and the radius of the cylinder is R. (a) Draw the free body s 63. An amusement park ride consists of a rotating circular
diagram of the woman inside the cylinder. (b)platform 8.00 m in diameter from which 10.0-kg seats re suspended at the end of 2.50-m massless chains
aWhat is the minimum velocity
(Fig. P6.63). When the system rotates, the chains make an s angle 􏰃 􏰀 28.0° with the vertical. (a) What is the speed of
(v) of the woman, in terms of R, μ , and g, to keep her from falling. each seat? (b) Draw a free-body diagram of a 40.0-kg child

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