A rock weighs 1000 N in air and 609 N in water. Find its volume.

Question

Question

Answer 1

Answer #1

A rock weighs 1000 N in air and 609 N in water. Find itsvolume:

force of gravity =1000 N, the buoyancy force "counteracts" theweight and makes it weigh less in the fluid.

So, the buoyant force B=1000N-609N=391N

Also, remember that the formula for Buyancy is: B=(density offluid)*(gravity constant)*(volume)

that implies (through algebra) that :

, so, put in the values and you get:

; (density of water is 1000 kg/m^3)

Answer 2

Answer #2

Answer 3

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