A 74 kg adult sits at one end of a 8.4 m long board. His 21...

Question

Question

A 74 kg adult sits at one end of a 8.4 m long board. His 21 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?

B. Find the pivot point if the board is uniform and has a mass of 11 kg .

Answer 1

Answer #1

a) 1.86 m from adult side

b) 2.1 m from adult side

Answer 2

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