Foundations of Physics 2. Author: Katie Katie has always been passionate about the sciences, and completed a degree in Astrophysics at Sheffield University. She particularly loves creating fun and absorbing materials to help students achieve their exam potential. Download PDF. Join Now Already a member? Log In. New resources.
Straight to your inbox. Sign up to our newsletter. Principle of floatation When a body displaces a weight of water equal to its own weight, it floats.
Example: hydraulic lift, hydraulic press and hydraulic brakes. It can also be applied to flowing fluid if the fluid is ideal. We can also say that how much mass it can contain in a specific volume.
As of dense material like Iron takes more mass in a given volume than of wood. Flotation: It can be defined as the tendency of an object to rise to the upper levels of the fluid or to stay on the surface of the fluid.
Sinking: The opposite of floatation is sinking and can be defined as the tendency of an object to go to the lower levels of the fluid. Therefore option 4 is correct.
If the density of the object is more than the density of the liquid, the object will sink. On the other side, if the density of an object is less than the liquid, then it will float over it. If the density of the object and liquid is equal to each other , they are in equilibrium and float and sink both at the same time Therefore, the sinking or floating of an object depends on the difference in density of objects and liquid.
Answer Detailed Solution Below Option 3 : 1. Concept: The draught is the height of body which is submerged in water or any other fluid. Answer Detailed Solution Below 7 - 8.
Concept: The net buoyancy force is upward force acted at center of buoyancy. Answer Detailed Solution Below Concept: Weight W : The weight of an object is defined as the force of gravity on the object and may be calculated as the mass times the acceleration of gravity , i.
Answer Detailed Solution Below Option 4 : 8. Concept: Figure shows the car ferry with load. Mass of liquid displaced Viscosity of the liquid Pressure of the liquid displaced Depth of immersion. Exam Preparation Simplified Learn, practice, analyse and improve. Testbook Edu Solutions Pvt. Our Apps. The weight of fluid displaced and therefore the upthrust will be bigger if the density of the liquid is large.
This is why it is easier to swim in the sea than in a freshwater lake. Archimedes principle says that when an object is immersed in a liquid the apparent loss of weight of an object is equal to the upthrust and this is also equal to the weight of the liquid displaced. You can prove this by the following experiments. Weigh an object in air and then lower it into a beaker of water that is resting on a top pan balance.
The reading on the spring balance will get less while the reading on the top pan balance will increase by the same amount. This can easily be done using a measuring cylinder as shown in the diagram. You can see how the apparent weight of the stone gets less when it is immersed in water.
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