Questions
A piece of wood is taken deep inside a long column of water and released. It will reach up with
a
Constant upward acceleration
b
Decreasing upwards acceleration
c
Deceleration
d
Uniform velocity
detailed solution
Correct option is A
Piece of wood will start moving up with an acceleration ofa=gρ-σσ, where ρ is the density of water and σ is the density of wood. but as the velocity of wood increases, the viscous drag by the liquid will increase in the opposite direction. So its upward acceleration also decreases.Talk to our academic expert!
Similar Questions
From amongst the following curves, which one shows the variation of the velocity v with time t for a small sized spherical body falling vertically in a long column of a viscous liquid
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