A rock suspended by a weighing scale weighs 5 N out of water and 3 N when submerged in water. what is the buoyant force on the rock?
2007-03-15 15:58:02 · 2 answers · asked by krystal 6 in Education & Reference ➔ Homework Help
thank you Jack, that is very helpful :)
2007-03-15 16:21:55 · update #1
2 N
(the difference between the "weight" (force of gravity on the rock) of the rock out of water and the "weight" (force of gravity minus the buoyant force) of the rock in the water)
As we know that the "weight" of the rock in the water is 3N and that the "weight" in water is:
(weight outside of water) - (buoyant force).
[Note: subtraction is used as the weight and buoyant force act in opposite directions]
then
5N - (BF) = 3N
thus, solving for BF
BF= 5N - 3N
BF = 2N
Any questions? I'll check back in a bit.
2007-03-15 16:06:46 · answer #1 · answered by Anonymous · 0⤊ 0⤋
WOW!!! A blonde is asking about science! WOW!!!
2007-03-15 16:06:05 · answer #2 · answered by EAT YOUR F**KIN CARROTS B*TCH!!! 4 · 0⤊ 1⤋