A 2.8 kg rectangular air mattress is 2.00m long,0.500 m wide and 0.100m thick. What mass can it support in water before sinking?
physics - bobpursley, Saturday, February 6, 2010 at 10:18pm
Figure out its volume.
Then, figure out the weight of the water that volume would displace
weight displaced water= volume*density*g
bouyance=weight water displaced-2kg*9.8N/kg
physics - Anonymous, Sunday, December 16, 2012 at 8:21pm