A boy with a mass of 40kg is seated a distance of 3.0m from the fulcrum of a seesaw.

a. Calculate the load force exerted by the boy (Hint: What force is pulling him down?)

b. Calculate the torque exerted by the boy.

c. If his sister with a mass of 24 kg wants to balance the seesaw, how far away from the fulcrum should she sit?

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