Advertisements
Advertisements
प्रश्न
Two rods of the same weight and equal length have different thickness. They are held vertically on the surface of sand as shown in figure. Which one of them will sink more? Why?
Advertisements
उत्तर
As we know that pressure exerted by the body is inversely proportional to the area where force is applied. So, the thinner rod, i.e. rod B will sink more because it has less area of cross-section in contact with the surface, hence it will exert more pressure on the sand with respect to the rod A.
APPEARS IN
संबंधित प्रश्न
Name the forces acting on a plastic bucket containing water held above ground level in your hand. Discuss why the forces acting on the bucket do not bring a change in its state of motion.
When an elephant drags a wooden log over the land, the forces that are applied on the log are ______, ______ and ______.
One or more forces are acting in the following example. Name them.
An aeroplane flying in sky: ______
Explain in your own words and give one example.
Gravitational force
Explain in your own words and give one example.
Mechanical force
Solve the following crossword puzzle.
Down:
(1) _______ force is to be applied to push a scooter that has failed.
(2) _________ force can be used to pick up scattered pins.
Across:
(1) A _______ pulls an iron nail towards itself.
(3) ________ force was used when the farm was ploughed with a tractor.
(4) It is due to the force of _________ that raindrops fall to the ground.
What is the contact force?
A person lifting a heavy bag from the ground is primarily using which type of contact force?
Which component of the reaction force between two surfaces in contact is known as the frictional force?
When two bottles with magnets float on water and are brought close together, they move toward each other. Which condition causes this?
