(Answered) Anbsp68nbspkg adult sits at one end of anbsp105nbspm long

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A 68 kg adult sits at one end of a 10.5 m long board. His 35 kg child sits on the other end.

(a) Where should the pivot be placed so that the board is balanced, ignoring the board's mass?

______m (measured from the adult)

(b) Find the pivot point if the board is uniform and has a mass of 15 kg.

______ m (measured from the adult)

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