The liquid is poured into a cylindrical glass and presses on the bottom with a force of 1.96 N.

The liquid is poured into a cylindrical glass and presses on the bottom with a force of 1.96 N. Determine which liquid is poured into the glass if the height of the liquid column is 20 cm and the bottom area of the glass is 10 cm2.

To find what kind of liquid is poured into a cylindrical glass, you need to find its density. And then, using the density table, find out what kind of liquid it is.

On the one hand, the fluid pressure is found by the formula:

p = ρ * g * h.

On the other hand, since we know the pressure force of this fluid:

p = F / S.

Equating the right-hand sides of these formulas, we get:

ρ * g * h = F / S;

ρ = F / (S * g * h).

Let’s substitute the data:

F = 1.96 H;

S = 10 cm ^ 2 = 10 ^ (- 3) cm ^ 2;

h = 20 cm = 0.2 m

and let’s do the calculations:

ρ = 1.96 H / (0.001 m ^ 2 * 9.81 N / kg * 0.2 m) = 1000 kg / m ^ 3.

Answer: water is poured into the vessel