Two people X and Y sit on a see-saw, as shown.
X weighs 400 N and sits 1.5 m from the pivot.
The weight of the see-saw is 300 N and acts through the pivot. When the see-saw is balanced, the pivot pushes up on the see-saw with a force of 900 N.
What is the weight of person Y and how far from the pivot is he sitting?
1 )
weight of Y/ N:200 / distance from pivot / m:1.5
weight of Y/ N:200 / distance from pivot / m:3.0
3 )
weight of Y/ N:400 / distance from pivot / m:1.5
4 )
weight of Y/ N:400 / distance from pivot / m:3.0
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