Question

27.
A cork is immersed in a jar of
water & released. How the cork
will move if the jar is assumed to
be kept in a satellite orbiting
earth:
(1) Sink
2) Rise
(3) Remain where left
(4) Depends upon the satellite
velocity​

Answer 1

Cork will remain in that position where it left. Option third is correct.

Explanation:

1. Magnitude of buoyant force ($F_{b}$) by liquid on object

$F_{b} = \rho _{l}\times V_{d}\times g$       ...a)

where

$\rho _{l}$ is density of liquid.

$V_{d}$ is displace volume of liquid by object

and g is gravitational acceleration

2. From above equation a, it is clear that buoyant force depend on density of liquid, volume displaced by object and gravitational acceleration.

3. There are no gravitational acceleration  in case of satellite orbiting earth.

4. So cork will feel no buoyant force.

After removing external force there will be no force on cork.

5. Means that net force acting on cork is zero. So cork will remain at that position where it was left.

Answer 2

Answer:

same position where left