1. The problem statement, all variables and given/known data 500m long tanker loaded displaces 5.64763x10^8kg water. the tanker is moved to another planet, and it has to displace mercury. What volume of mercury would it displace? and do you need the gravity on that planet? 2. Relevant equations Fb=Fg pf object of subject = P0V0g PfVfg=Weight of displaced fluid=p0v0g=weight of object Vu=v0-vf=v0-(p0v0g/pfg)=v0(1-(po/pf) 3. The attempt at a solution I tired to find the volume of water, the vf and tried every thing, i dont seem to get anywhere.. Can some one direct me to the right path?