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Q. A child is riding a merry-go-round which completes a revolution every 8.36 s. The child is standing 4.65 m from the center of the merry-go-round. What is the magnitude of the centripetal acceleration of the child?

Q. A loudspeaker of mass 23.0 {rm kg} is suspended a distance of h = 2.20 {rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.30 {rm m}.

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