Question

A block of wood is floating on water with its dimensions 50$cm\times 50cm\times 50cm$ inside water.Calculate the buoyant force acting on the block.Take $g=9.8N{kg}^{-1}$

• A. 1000
• B. 1261
• C. 2000
• D. 3000

Answer 1

The correct option is B 1261

Buoyant force on the block

= weight of liquid displaced by the block

$=V_{block}\times P_{water}\times g$

$=(.5\times .5\times .5)m^3\times (1.03\times {10}^3)kg/m^3\times \left(9.8\right)Nk{g}^{-1}$

$=1.261\times {10}^{3}N$