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प्रश्न
What is the other name of buoyant force ?
उत्तर
Buoyant force is also known as upthrust.
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संबंधित प्रश्न
What do you mean by buoyancy?
How does the pressure exerted by thrust depend on the area of surface on which it acts? Explain with a suitable example.
Complete the following sentence :
Pressure at a depth h in a liquid of density p is ......................
Define upthrust and state its S.I. unit.
The mass of a block made of certain material is 13.5 kg and its volume is 15 × 10-3 m3.
(a) Calculate upthrust on the block if it is held fully immersed in water.
(b) Will the block float or sink in water when released? Give a reason for your answer.
(c) What will be the upthrust on block while floating?
Take density of water = 1000 kg m-3.
A homogeneous block floats on water (a) partly immersed (b) completely immersed. In each case state the position of centre of buoyancy B with respect to the centre of gravity G of the block.
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.
Calculate the hydrostatic pressure exerted by water at the bottom of a beaker. Take the depth of water as 40 cm, the density of water 1000 kgm−3 and g = 9.8 ms−2.
Is pressure a vector quantity?
Complete the analogy.
Downward force: Weight:: Upward force offered by liquid: _____
