Chemistry, 21.06.2022 22:00, jonmorton159

What makes this lever effective? A: The man had more mass than the rock
B: The man is closer to the fulcrum than the rock is
C: The man is farther from the fulcrum than the rock is
D: The rock has more mass than the man

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What makes this lever effective? A: The man had more mass than the rock
B: The man is close...