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Standard IX

Physics

Thrust & Pressure

A sphere of i...

Question

A sphere of iron and another of wood of the same radius are held under water. Let $F_{A}$ and $F_{B}$ are the uptrusts of iron and wood respectively.Compare the upthrust on the two spheres.

F_{A}

F_{B}

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F_{A}

F_{B}

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F_{A}

F_{B}

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None of the above

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Solution

The correct option is A $F_{A}$ = $F_{B}$
As both have equal volume inside water, they will experience the same upthrust
$F_{T h r u s t} = ρ V g$ , where $ρ$ is density of water and $V$ is volume of spheres.
Hence, option A is correct.

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A sphere of iron and another of wood of the same radius are held under water. Let FA and FB are the uptrusts of iron and wood respectively.Compare the upthrust on the two spheres.

The correct option is A FA=FBAs both have equal volume inside water, they will experience the same upthrustFThrust=ρVg, where ρ is density of water and V is volume of spheres.Hence, option A is correct.

A sphere of iron and another of wood of the same radius are held under water. Let $F_{A}$ and $F_{B}$ are the uptrusts of iron and wood respectively.Compare the upthrust on the two spheres.

The correct option is A $F_{A}$ = $F_{B}$
As both have equal volume inside water, they will experience the same upthrust
$F_{T h r u s t} = ρ V g$ , where $ρ$ is density of water and $V$ is volume of spheres.
Hence, option A is correct.