Question

what causes the ffect of neutral bouyancy at the NBL ?
a.the trining room has no gravity
b.the water in the pool is extra heavy
c. the astronaut trainees wear a special suit
d.the astronauts must swim instead of walk

Answer 1

c. the astronaut trainees wear (and have) specially weighted suits so their overall buoyancy equals their weight. This makes the net force zero (neutral buoyancy). It’s not zero gravity (gravity is present) nor because the water is “extra heavy,” and they don’t simply swim instead of walk.