# Liquid pressure multiple choice

• phuntime
In summary, a piece of metal with a density of 19.3 g/cm3 and dimensions of 10cm X 20cm X 5cm is placed in a water basket filled with water. The basket has a radius of 0.25m and a height of 1m, with a density of water of 1g/cm3. The question asks for the total force acting on the metal, which can be calculated using F= PA. With the assumption that there is no buoyancy because the bottom of the metal does not touch the water, the only net force acting on the metal is the pressure from the water above it. The surface area of the metal is 0.02 m2 and the depth of

## Homework Statement

a piece of metal of 10cm X 20 cm X 5 cm is sitting flat on the bottom of water basket, with one of the 10cm X 20cm sides facing up. the metal has density of 19.3 g/cm3. The basket is filled with water(full). The backet has a radius of 0.25m and a hight of 1m, density of water 1g/cm3.

What is the total force acting on the metal?
a) 9800N
b) 196 N
c) 19.3 N
d) 1.00N
e) none of the above

P = pgh, F= PA

## The Attempt at a Solution

The question asks for total force. So i first assumed they are asking for total net force. Considering the bottom of the metal does not touch water, i think there is no bouyancy. So the only net force acting on it is the pressure from water above the metal.

The surface area = 0.2 m X 0.1m = 0.02 m2
depth of water = 0.95m
volume of water above the metal v = 0.95X0.02 = 0.019 m3
Gwater = 0.019 X 1000kg/m3 X 9.8 n/kg = 186.2 N

but there is no 186.2 N in the question, i did it using P = pgh and still gets the same thing, what could it be?