Mechanical Properties of Fluids
A drop of water of radius r is falling through the air of coefficient of viscosity η with a constant velocity of v. The resultant force on the drop is:
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A spherical ball is dropped in a long column of a viscous liquid. The speed v of ball as a function of time may be best represented by graph
An Indian Submarine is moving in "Arab Sager" with a constant velocity, detect enemy it sends out sonar waves which travel with velocity 1050 m/s in water. Initially, the waves are getting reflected from a fixed land the reflected waves are coming back to the submarine. The frequency of reflected waves are detected by & submarine and found to be 10% greater than the sent waves. Now an enemy ship comes in front. due to which at type frequency of reflected waves detected by submarine becomes 21% greater than the sent waves.
Consider a thin square plate floating on a viscous liquid in a large tank. The height h of the liquid in the tank is much less than the width of the tank. The floating plate is pulled horizontally with a constant velocity u0. Which of the following statements is (are) true?
Of the following, which is the only ratio that is NOT dimensionless?
A cubical block of side 2m and mass 20 kg slides on an inclined plane lubricated with the oil of viscosity η=10−1 poise, with a constant velocity of 10 m/sec (g = 10 m/sec2). The thickness of the layer of liquid
Determine the period of oscillation of mercury of mass m = 200g poured into a bent tube whose right arm forms an angle θ = 30 with the vertical. The cross-sectional area of the tube S = 0.50 cm2. The viscosity of mercury is to be neglected.
The force of viscosity is:
A viscous liquid flows through a uniform tube. As we move from the axis of the tube towards its wall, the speed of the liquid relative to the tube