Advertisements
Advertisements
Question
The base of the cylindrical vessel measures 300 cm2. Water is poured into it up to a depth of 6 cm. Calculate the pressure of water on the base in the vessel.
Advertisements
Solution
Area of base of cylinder = A = 300 cm2
A = 300 × 10 m2
A = 3 × 102 m2
Height (or depth) of water column = h = 6 cm
h = `6/100` m
Density of water = ρ = 1000 kg/m3
Acceleration due to gravity = g = 10 m/s2
Pressure at the base in vessel = P = hρg
ρ = `6/100xx1000xx10`
P = 600 Pa
APPEARS IN
RELATED QUESTIONS
Name the force which makes heavy objects appear light when immersed in a liquid.
An object of weight 200 N is floating in a liquid. What is the magnitude of buoyant force acting on it ?
A body sinks in a liquid A but floats in a liquid B. The density of liquid A is ....... than the density of liquid B.
The relative density of alcohol is 0.8. Its density is
Define the term relative density of a substance.
The diagram below in Fig. 4.12 shows a device which makes the use of the principle of transmission of pressure.

- Name the parts labelled by the letters X and Y.
- Describe what happens to valves A and B and to the quantity of water in the two cylinders when the lever arm is moved down.
- Give reasons for what happens to valves A and B in part (ii).
- What happens when the release valve is opened?
- What happens to valve B in cylinder P when the lever arm is moved up?
- Give a reason for your answer in part (v).
- State one use of the above device.
Will a body weigh more in air or vacuum when weighed with a spring balance? Give a reason for your answer.
Figure shows the same block of wood floating in three different liquids A, B and C of densities ρ1, ρ2 and ρ3 respectively. Which of the liquid has the highest density? Give a reason for your answer.

Select the correct option.
Unit of thrust in the SI system is
The upward force that is caused due to the pressure difference in liquid (or fluid) is called ______.
