Homework Help: Physics

Posted by Jaime on Tuesday, January 27, 2009 at 6:58pm.

a solid aluminum ingot weighs 89N in the air. what is its volume? (b) the ingot is suspended from a rope and totally immersed in water. What is the tension in the rope?

Physics - bobpursley, Tuesday, January 27, 2009 at 7:35pm
VolumeinAir=Mass/density
mass=weight/g
Now in the water, it has the same mass, and the same volume. But it has a force of bouyancy equal to the weight of the displaced water.

bouyancy=densitywater*volume*g

weight in water=89N-bouyancyforce

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