If an astronaut and her space suit weigh 250 lb on Earth, what should be the volume of her suit if she is to practice for weightless conditions in an underwater neutral buoyant simulator similar to the one used by NASA shown in Chapter 7.
What will be an ideal response?
For the astronaut to be neutrally buoyant, her weight should equal the buoyancy
force acting on her.
Note that the density of water was expressed using units of slugs/ft^3. If we were to
express the density of water in lbm/ft^3 (pwater = 62.4 lbm/ft^3), the value of density
must be divided by the correction factor gc = 32.2ft.lbm/lbf.s^2 to have consistent
units in the given relationship.
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