A 70 kg adult sits at one end of a 10 m board, on the other end of which sits his 30 kg child. Where should the pivot be placed so the board (ignore its mass) is balanced?
coexpennan
Answered question
2020-10-31
Answer & Explanation
Sadie Eaton
Skilled2020-11-01Added 104 answers
We know that
From the above:
and
and
Given that
and d=10m
From the above we get the required answer.
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