Posted by **HELP ME** on Tuesday, January 24, 2012 at 7:27pm.

A copper (Cu) weight is placed on top of a 0.24 kg block of wood (density = 0.60*10^3 kg/m3) floating in water. What is the mass of the copper if the top of the wood block is exactly at the water's surface?

- physics -
**Henry**, Thursday, January 26, 2012 at 8:49pm
Vb = 0.24kg / 600kg/m^3 = 0.0004 m^3. =

400cm^3 = Vol. of block of wood.

Mass = 400cm^3 * 0.001kg/cm^2 = 0.4 kg = mass of water displaced = mass of copper + block.

Mass of CU = 0.40kg - 0.24kg = 0.16 kg

- physics -
**Henry**, Thursday, January 26, 2012 at 9:05pm
Correction: 0.oo1kg/cm^2 should be

0.001kg/cm^3. Does not affect results.

- physics -
**jon**, Monday, December 3, 2012 at 12:26pm
eh! wrong...

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