Question

A beaker when partly filled with water has total mass $20.00g$. lf a piece of metal with density $3.00g/c{m}^3$, and volume $1.00c{m}^3$ is suspended by a thin string, so that it is submerged in the water but does not rest on the bottom of the beaker. How much does the beaker then appear to weigh if it is resting on a scale?

Answer 1

Reading=weight of water+magnitude of upthrust on piece of metal (acting downwards)
$=(0.02\times 9.8)+\left({10}^{-6}\right)\left({10}^3\right)\left(9.8\right)$
$=0.206$ N