- #1
hannam
- 10
- 0
Homework Statement
A cubical block of wood, 10 cm on a side, is placed in a
glass cup whose higher end is open to the atmosphere. The
wood is in equilibrium at the interface between water and oil
with wood’s lower surface 2 cm below the interface. The
density of oil is 790 kg/m3.
a) What is the (absolute) pressure at the lower and upper face of
the wood block?
b) What are the mass and density of the block?
Homework Equations
fb=p liquid * v sinked*g
p object * v object = p liquid * v sinked
P1= Po+ p*h*g
The Attempt at a Solution
0.02*1 + 790*x = p wood*(2+x) =m
does it say edge of the wood is 10 cm? my english is not very good and if it is 10 cm, i can find m.
but still i have no idea about the pressure part.
my exam is tomorrow. any help is appreciated :(