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प्रश्न
Complete the analogy.
Downward force: Weight:: Upward force offered by liquid: _____
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उत्तर
Downward force: Weight:: Upward force offered by liquid: Buoyant force.
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संबंधित प्रश्न
What is the other name of buoyant force ?
A body while floating sinks deeper in a liquid of low density than in a liquid of high density.
The buoyant force experienced by a body when floating in saltwater is ....... to or same that of when floating in pure water.
The density of water is 1.0 g Cm-3. The density of iron is 7.8 × 10″3 g Cm-3. The density of mercury is 13.6 g Cm-3.
Answer the following:
Will a piece of iron float or sink in mercury?
Define the term thrust. State its S.I. unit.
Complete the following sentence :
Pressure at all points at the same depth is ....................
A body weighs 450 gf in air and 310 gf when completely immersed in water. Find
(i) The volume of the body,
(ii) The loss in weight of the body, and
(iii) The upthrust on the body.
State the assumption made in part (i).
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.
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.
Assertion (A): The buoyant force on a submerged rigid object can be considered to be acting at the center of mass of the object.
Reason (R): In rigid body, force distributed uniformly through its volume can be considered to be acting at the centre of mass of the body.
