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Paper 3Theory (Core)4 marks
A seesaw is balanced with two children sitting on either end.
Description
Seesaw Balance
Child A weighs 30 kg and sits 2 m from the pivot. Child B weighs 40 kg. Calculate the distance Child B must sit from the pivot to maintain equilibrium.
- a[1]
State the principle that allows the seesaw to be in equilibrium.
Aim for approximately 1 distinct marking point.
- b[3]
Describe how to calculate the distance Child B must sit from the pivot.
Aim for approximately 3 distinct marking points.
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