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Rugveda
a year ago | Physics | Mechanical Properties of Fluids
  • how exactly does terminal force act on a Parachute?

  • Reference Video
kapil gupta
a year ago
  • After about five seconds, you reach a speed where the force of air resistance (pushing you upward) increases so much that it balances the force of gravity (pulling you downward). At that point, there is no net acceleration and you keep on falling at a steady speed called your terminal velocity. Unfortunately, the terminal velocity for a falling person (with arms stretched out in the classic freefall position) is about 55 meters per second (200km/h or 125 mph), which is still plenty fast enough to kill you—especially if you're falling from a plane!

Anamika upadhyay
10 months ago | Physics | Mechanical Properties of Fluids
  • the volume of an air bubble is doubled as it rises from the bottom of lake to its surface .the atmospheric pressure is 75 cm of mercury . the ratio of density of mercury to that of lake water is 40/3. the depth of lake in metre is 

  • Reference Video
Kapil Gupta
8 months ago
  • Please share your working so that we can understanding where you are not able to understand....you can share picture also of your working.

Anamika upadhyay
10 months ago | Physics | Mechanical Properties of Fluids
  • A body of density rho is dropped from rest from a height h into a lake of density sigma , where sigma>rho neglecting all dissipative forces , the maximum depth to which the body sinks before returning to float to surface 

    1. h/sigma - rho                   2. h.rho/sigma

    3.h.sigma/sigma - rho           4. h.rho/sigma - rho 

  • Reference Video
Kapil Gupta
8 months ago
  • Please share your working so that we can understand where you are not able to understand...you can share picture also.

Anamika upadhyay
10 months ago | Physics | Mechanical Properties of Fluids
  • A metallic sphere weighing 3 kg in air is held by a string so as to completely immersed in a liquid of relative density 0.8 . the relative density of metallic sphere is 10. the tension in string is 

     

  • Reference Video
Kapil Gupta
8 months ago
  • Please share your working so that we can understand where you are not able to understand...you can share picture also.

Anamika upadhyay
10 months ago | Physics | Mechanical Properties of Fluids
  • A capillary tube of radius r is immersed in a liquid which rises up in it is M .if the radius of tube is doubled , then mass of liquid which rise in capillary tube will be 

    1. 2M                               2. M

    3.M/2                                4.M/4

  • Reference Video
Kapil Gupta
8 months ago
  • Please share your working so that we can understand where you are not able to understand...you can share picture also.

Anamika upadhyay
10 months ago | Physics | Mechanical Properties of Fluids
  • An open u tube contains mecury .when 13.6 cm of water is poured into one of the arms of the tube ,then the mercury rise in other arm from its initial level is 

    1. 1 cm                                       2. 0.5cm

    3.10cm                                        4. 5 cm

  • Reference Video
Kapil Gupta
8 months ago
  • Please share your working so that we can understand where you are not able to understand...you can share picture also.

vandana prasad
10 months ago | Physics | Mechanical Properties of Fluids
IndianAlex Ashra
9 months ago
  • 2:1
Sajjad Zara
9 months ago | Physics | Mechanical Properties of Fluids
  • hum mercury ke surface se hi height kyo measure karte hain?
  • Reference Video
Divya Garg
6 months ago
  • Because we know that A and B are at same level in the same fluid. We also know the pressure at A which is at the surface of the mercury.

gaurav bhargava
9 months ago | Physics | Mechanical Properties of Fluids
Divya Garg
6 months ago
  • This is the property of fluid. They have low intermolecular forces.

Ars Letter Kazi
9 months ago | Physics | Mechanical Properties of Fluids
  • If pressure at the half depth of a lake is equal to 3/4 times the pressure at its bottom, then find the depth of the lake ?

Vaqqar Haider
7 months ago
  • P+ hdg/2=3/4P+ 3hdg/4

    P=hdg

    h=10m