"Lowest Child B: Why Dropping Rocks is Best Choice

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Dropping the rock by Child B is the best choice to lower them on the seesaw. When Child B drops her rock while Child A holds onto theirs, the balance shifts, causing Child B to descend. Other scenarios, such as throwing rocks or both dropping them simultaneously, do not effectively change the balance in favor of lowering Child B. The most appropriate situation is when only Child B drops her rock, as it directly impacts the seesaw's equilibrium. This analysis highlights the importance of weight distribution in seesaw mechanics.
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Need desperate help!

Two Children (A and B) of equal weight are sitting on the seesaw holding rocks of equal weight so that the seesaw is balanced. Which of the following events would lower child B?



Explain why or why not the situation is or is not the best choice. There is only 1 most appropriate situation.

a) B drops her rock, but A does not

b) A and B throw their rocks at each other.

c) A holds her rock over her head and B throws her rock at A

d) A drops her rock, but B throws hers straight up.

e) Both drop their rocks at exactly the same moment.
 
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