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प्रश्न
What is the scientific name of the 'upward force' acting on an object immersed in a liquid?
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उत्तर
Buoyant force or upthrust is the scientific term for the upward force acting on an object immersed in a liquid.
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संबंधित प्रश्न
A body experiences the same buoyant force when it floats or sinks in water.
The weight of a body floating in a liquid is ........
How is the unit bar related to the S.I. unit pascal?
State whether pressure is a scalar or vector?
Complete the following sentence :
Pressure is .................... in all directions about a point in a liquid.
A vessel contains water up to a height of 1.5 m. Taking the density of water 103 kg m-3, acceleration due to gravity 9.8 m s-2 and area of base of vessel 100 cm2, calculate: (a) the pressure and (b) the thrust at the base of vessel.
- Calculate the height of a water column which will exert on its base the same pressure as the 70 cm column of mercury. Density of mercury is 13.6 g cm-3.
- Will the height of the water column in part (a) change if the cross-section of the water column is made wider?
A body of mass 3.5 kg displaces 1000 cm3 of water when fully immersed inside it. Calculate:
- the volume of body,
- the upthrust on body and
- the apparent weight of body in water.
Two identical pieces, one of ice (density = 900kg per meter cube) and other wood (density = 300kg per meter cube) float on water.
- Which of the two will have more volume submerged inside water
- Which of two will experience more upthrust due to water.
Consider the statement given below and choose the correct option.
Assertion: Water strider slides easily on the surface of the water.
Reason: Water strider experiences less buoyant force.
