damcholhadengem
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a mother with a weight of 60 N is seated on the left side of a see-saw which is 3 m away from the pivot and her son with a weight of 40 N is seated at a distance of 4m on the right. Where should the sister of 10 N be seated to balance the see-saw?​

Respuesta :

Madlad69

Answer:

The system should be in rotational equilibrium.

we can see that the torque of mom is greater so sis will sit on the right.

let the distance be x from the pivot.

60×3 = 40×4 + 10×x

180-160= 10x

x = 2m

so sis will sit 2m on the right.

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