Advertisements
Advertisements
प्रश्न
The pressure of water on the ground floor is 40,000 Pa and on the first floor is 10,000 Pa. Find the height of the first floor. (Take : density of water = 1000 kg m-3, g = 10 m s-2)
उत्तर
Pressure of water on ground floor = 40,000 pascal
Pressure of water on first floor = 10,000 pascal
Density of water , ρ = 1000 kg m-3
Acceleration due to gravity , g = 10 ms-2
Let h be the height of the first floor.
Difference in water pressure between ground and first floor = hρg
or , (40,000 - 10,000) = h (1000) (10)
or , h = 3 m
APPEARS IN
संबंधित प्रश्न
Distinguish between density and relative density.
Which of the following will sink or float on water? (Density of water = 1 g Cm-3)
body C having density 1100 kg m-3
Explain the following statement:
It is easier to cut with a sharp knife than with a blunt one.
State three factors on which the pressure at a point in a liquid depends.
How does the liquid pressure on a diver change if:
the diver moves to the greater depth
Complete the following sentence :
Pressure at a point inside the liquid is ...................... To its depth.
A homogeneous block floats on water (a) partly immersed (b) completely immersed. In each case state the position of centre of buoyancy B with respect to the centre of gravity G of the block.
A balloon filled with helium gas floats in a big closed jar which is connected to an evacuating pump. What will be your observation, if air from the jar is pumped out? Explain your answer.
A beaker contains a liquid of density ‘ρ’ up to height ‘h’ such that ‘PA’ is atmospheric pressure and ‘g’ is the acceleration due to gravity. Answer the following questions:
- What is the pressure on the free surface of the liquid?
- What is the pressure on the base of the beaker?
- What is the lateral pressure at the base on the inner walls of the beaker?
If the buoyant force is less, the object will float.
