a block of wood 0.12m high, 0.06m wide and 0.1m long, having a density of 700kg/m^3 floats on water find:
1) how much of it will be above the water surface?
2) how much weight has to be placed on top of the block so that its top is level with the water?

Question

a block of wood 0.12m high, 0.06m wide and 0.1m long, having a density of 700kg/m^3 floats on water find:
1) how much of it will be above the water surface?
2) how much weight has to be placed on top of the block so that its top is level with the water?

anonymous · Answer

@SolomonZelman

anonymous · Answer

@uri

zephyr141 · Answer

so find the mass of the block. then using the density of water find the volume by using the same mass. then you're left with an unknown height. the length and width will be the same as the block. does this sound right so far @surry99

zephyr141 · Answer

and then for the second part you would find the mass of a body of water with the same dimensions as the block. then subtract the block's mass from that and that will be the mass required to submerge the block completely.