Question

There is a cylinder container of radius 1 m and of height 1 m, holding water. A metal lid is touching the water surface. If you put 10 kg of weight on the lid, what is the increase in water pressure at the bottom of the cylinder.
A. 1.0 N/m^2
B. 3.1 N/m^2
C. 10 N/m^2
D. 31 N/m ^2

Answer 1

Pressure is force/area.

Answer 2

Force (10 k) divided by area of bottom (3.14156* r^2) approximately 3.2 k/m^2. So it is B

Answer 3

No, kilograms are mass. Here's the relevant equation:\[P= \frac{ F }{ A }=\frac{ mg }{ A }\]where m is mass; g is the acceleration of gravity; and A is area.