Advertisements
Advertisements
प्रश्न
A block of Ag of mass x kg hanging from a string is immersed in a liquid of relative density 0.72. If the relative density of Ag is 10 and tension in the string is 37.12 N then compute the mass of Ag block.
उत्तर
From the terminal velocity condition, FG – U = F F = T, m = x
`"mg" - "mg"((ρ_"w")/ρ)` = T
`"mg" [1 - 0.72/10]` = 37.12
9.8x [1 – 0.072] = 37.12
9.0944x = 37.12
x = 4 kg
APPEARS IN
संबंधित प्रश्न
The unit of viscosity is
A small sphere of radius 2 cm falls from rest in a viscous liquid. Heat is produced due to viscous force. The rate of production of heat when the sphere attains its terminal velocity is proportional to
With an increase in temperature, the viscosity of liquid and gas, respectively will __________.
What is Reynold’s number? Give its significance.
Write down the expression for Stoke’s force and explain the symbols involved in it.
Choose the CORRECT statement.
Analogy
Viscous force: ______:: Buoyant force: ______.
With increase in temperature, the viscosity of ______.
- gases decreases.
- liquids increases.
- gases increases.
- liquids decreases.
Is viscosity a vector?
Define velocity gradient.
