Advertisements
Advertisements
प्रश्न
A metal solid cylinder tied to a thread is hanging from the hook of a spring balance. The cylinder is gradually immersed into the water contained in a jar. What changes do you expect in the readings of the spring balance? Explain your answer.
Advertisements
उत्तर
The readings in the spring balance decreases.
As the cylinder is immersed in the jar of water, an upward force acts on it, which is in opposition to the weight component of the cylinder. Hence the cylinder appears to be lighter.
APPEARS IN
संबंधित प्रश्न
A body experiences the same buoyant force when it floats or sinks in water.
A body while floating sinks deeper in a liquid of low density than in a liquid of high density.
Describe an experiment to determine the density of the material of a coin.
A plastic cube is released into the water. Will it sink or come to the surface of the water?
Define upthrust and state its S.I. unit.
The S.I. unit of upthrust is :
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?
Select the correct option:
When an object sinks in a liquid, its:
Write about buoyant force.
Most buoyant objects are those with relatively ______.
- high volume
- higher mass
- low density
- less viscosity
