Question

A boy with a mass of 66 kg sits on a see-saw, 1.2 meters from the fulcrum. How far from the fulcrum will a 44-kg girl need to sit to balance the boy?

Answer 1

610 kg far from the fulcrum a 44-kg girl need to sit to balance the boy.      

Answer 2

The girl should sit 1.8 m away from the falcrum to balance a 66 kg boy.

Given here,

Mass of the boy =  66 kg

Distance of the boy from the falcrum = 1.2 m

Mass of the girl = 44-kg

Distance of the girl from the falcrum = x =?

To balance the falcrum,

$\bold {1.2\times 66 = 44\times x,}\\ \\\bold {x = 1.8\ m}$

Therefore, the girl should sit 1.8 m away from the falcrum to balance a 66 kg boy.

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