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A seesaw was made by pivoting a 3 m wooden plank at its center. A 30...

A seesaw was made by pivoting a 3 m wooden plank at its center. A 30 kg child sits on the left end of the seesaw and a 40 kg child sits 50 cm from the right end of the seesaw.

a) Which child will be closer to the ground (30 or 40 kg)?

b) In which direction must the 40 kg child move (to the left or to the right) to balance the seesaw?

c) How far must the 40 kg child move to balance the seesaw?

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