Advertisements
Advertisements
प्रश्न
Define terminal velocity.
उत्तर
The maximum constant velocity acquired by a body while falling freely through a viscous medium is called the terminal velocity VT.
APPEARS IN
संबंधित प्रश्न
(a) What is the largest average velocity of blood flow in an artery of radius 2 × 10–3 m if the flow must remain laminar? (b) What is the corresponding flow rate? (Take viscosity of blood to be 2.084 × 10–3 Pa s).
A spherical ball is dropped in a long column of a viscous liquid. The speed of the ball as a function of time may be best represented by the graph
Which has greater viscosity, oil or honey? Why?
With an increase in temperature, the viscosity of liquid and gas, respectively will __________.
What is Reynold’s number? Give its significance.
Derive the expression for the terminal velocity of a sphere moving in a high viscous fluid using stokes force.
The velocity of water in river is 8 km/hr of the upper surface. The river is 12 m deep. If the coefficient of viscosity of water is 10-2 poise then the shearing stress between horizontal layers of water is ______.
The velocity of a small ball of mass M and density d, when dropped in a container filled with glycerine becomes constant after some time. If the density of glycerine is `"d"/2`, then the viscous force acting on the ball will be ______
State and explain Newton's law of viscosity.
A water pipe with diameter of 5.0 cm is connected to another pipe of diameter 2.5 cm. How would the speeds of the water flow compare?