A 1-kg rock is suspended from the tip of a horizontal meterstick at the 0-cm mark so that the meterstick barely balances like a seesaw when its fulcrum is at the 12.5-cm mark. From this information, the mass of the meterstick is
A)1/4 kg.
B)1/2 kg.
C)3/4 kg.
D)1 kg.
E)none of the above

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The Answer of A 1-kg rock is suspended from the tip of a horizontal meterstick at the 0-cm mark so that the meterstick barely balances like a seesaw when its fulcrum is at the 12.5-cm mark. From this information, the mass of the meterstick is
A)1/4 kg.
B)1/2 kg.
C)3/4 kg.
D)1 kg.
E)none of the above

A 1-Kg Rock Is Suspended from the Tip of a Horizontal