First slide

Pressure in a fluid-mechanical properties of fluids

Question

A body is just floating on the surface of a liquid. The density of the body is same as that of the liquid. The body is slightly pushed down. What will happen to the body

Moderate

A

It will slowly come back to its earlier position
B

It will remain submerged, where it is left
C

It will sink
D

It will come out violently

Solution

Downward force due to the atmospheric pressure and pressure due to liquid exert more than the upthrust, the body submerged where it left. (Downward force on the body increases due to atmospheric pressure and due to water column above the body. Therefore body sinks in the liquid.)

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