Question

10. A boy of mass 30 kg is sitting at a distance of 2 m from
the middle of a see-saw. Where should a boy of mass
40 kg sit so as to balance the sea saw ? (Ans. 1.5 m)​

Answer 1

Answer:

Let the distance of 40 kg. from the mean position be 'x' m.

Using principle of moments,

30×2=40×x

x=1.5m.

A boy of mass 40 kg should sit at 1.5m from the middle of see-saw.

Explanation:

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