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You and your little cousin sit on a see-saw. You sit 0.5 m from the fulcrum, and your cousin sits 1.5 m from the fulcrum. You weigh 600 N. How much does she weigh?

User Vasaka
by
6.9k points

1 Answer

8 votes

Answer:

200N

Step-by-step explanation:

Distance from fulcrum by you = 0.5m

Distance from fulcrum by cousin = 1.5m

Your weight = 600N

Unknown:

Weight of my cousin = ?

Solution:

From the principle of moment, when an object is balanced, the sum of the clockwise moment is equal to the sum of the anti-clockwise moment.

So;

Your weight x distance from fulcrum by you = Weight of cousin x her distance from the fulcrum

600 x 0.5 = weight of cousin x 1.5m

Weight of cousin = 200N

User Abhinav Sood
by
6.7k points