How does the pressure exerted by thrust depend on the area of surface on which it acts? To withstand it, he needs to wear a special protective suit. It is the atmospheric pressure acting on the surface of the mercury in the trough that supports the vertical mercury column. In both the cases, the thrust exerted on the sand is equal (equal to the weight of the body). unit of the quantity? The mercury level in the tube falls until it is about 76 cm (h =760 mm) vertically above the mercury level. Fluids exert pressure on surfaces, and this pressure acts at 90° to those surfaces – we say that it acts, exerts a pressure on you, and everything around you. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share …
these solution are given of Concise 9th Physics of Chapter-4 (Pressure in Fluids and Atmospheric Pressure).
Pressure on narrow piston = Pressure on wider piston. Have questions or comments? A fluid is a material which flows at room temperature, because its upper molecule overlaps the inner molecule, which tends to flow the liquid in forward direction.
Write the numerical value of the atmospheric pressure on the surface of earth in pascal. In a water pump, on pulling the piston up, the pressure of air inside the siphon decreases and the atmospheric pressure on the water outside increases. Therefore, the pressure calculated at a given depth is different than the pressure calculated using a constant density. Assuming g = 10 m s-2 and density of air to be uniform and equal to 1.3 kg m-3, find the height of the atmosphere.
In a simple barometer, a scale cannot be fixed with the tube (or it cannot be marked on the tube) to measure the atmospheric pressure but Fortin’s barometer is provided with a vernier calipers to measure the accurate reading.
Read the whole chapter carefully and Solved all example of Chapter-4 Pressure in Fluids and Atmospheric Pressure Class-9 Physics. Give two reasons for use of mercury as a barometric liquid.
Draw a simple diagram of a hydraulic jack and explain its working. A solid exerts pressure only on the surface on which it is placed, i.e.
MULTIPLE CHOICE TYPE 4(B) Atmospheric pressure in Fluids and Atmospheric Pressure Chapter-4 Solutions. How is it related to the S.I. Take density of. Gauge Pressure: The valve V gets closed (since the pressure on the either side of the valve becomes same) so that the liquid may not run back from the cylinder Q to cylinder P. Explain the working of a hydraulic brake with a simple labelled diagram. Take R.D. Hydraulic press works on principle of hydraulic machine. Thus, the air pressure outside the can becomes more than the vapour pressure inside the closed can. Your email address will not be published. The solution of this equation depends upon whether the density \(\rho\) is constant or changes with depth; that is, the function \(\rho\)(y). Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. h = height of liquid column, If ρ = density of the liquid A liquid exerts pressure only on its base downwards while a solid exerts pressure at all points in all directions.
Pressure is the thrust per unit area of the surface. What force is obtained on its piston of area of cross section 100 cm2 ? (Take : density of water = 1000 kg m-3, g = 10 m s-2). The scale of altimeter is graduated with height increasing towards left because the atmospheric pressure decreases with increase of height above the sea level. The effects of pressure can be seen in the collapsing can experiment.