Question

Wan and Nurul sat on a see-saw. The see-saw is imbalanced because Wan’s mass is 45 kg while Nurul’s mass is only 30 kg. Suggest how Nurul can balance the see-saw.

Answer 1

We have that the see-saw will be balance if a weight of $x=15kg$ is added to Nural's side of the see-saw

$x=15kg$

From the Question we are told that

Wan’s mass is $M_w=45 kg$

Nurul’s mass is $M_n= 30 kg.$

Generally

The Will be balance when the weight on both sides of the see-saw are equal

$M_w=M_n+x$

$45=30+x$

$x=45-30$

$x=15kg$

In conclusion

The see-saw will be balance if a weight of $x=15kg$ is added to Nural's side of the see-saw

$x=15kg$

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