Apparent weight and real weight|weightlessness

The apparent weight of a body

The apparent weight of man in a lift is less the real weight when :

A weightless balloon is filled with water. What will be its apparent weight when weighted in water?

The apparent weight of a body , weighing M kg wt , during free fall is

At which angular speed the earth should rotates so that the apparent weight of an object at equator will become zero ?

The apparent weight of a steel sphere immersed in various liquids is measured using a spring balance. The greatest reading is obtained for the liquid

A sinker of weight w_0 has an apparent weight w_1 when weighed in a liquid at a temperature t_1 and w_2 when weight in the same liquid at temperature t_2 . The coefficient of cubical expansion of the material of sinker is beta . What is the coefficient of volume expansion of the liquid.

A lift is accelerated upward Will the apparent weight of a person inside the lift increase , decrease or remain the same relative to its real weight ? If the lift is going with unifrom speed then ?

A body is kept in a lift may be moving upwards or dowwards. It is found that durig the motion of the lift, the apparent weight of the body becomes twice its real weight. Then the lift is

Assertion : When the lift moves with uniform velocity the man in the lift will feel weightlessness. Reason : In downward accelerated motion of lift, apparent weight of a body decreases.