Question

F 1= 200 н S 1 = 100см2 S 2=25 см2 F 2=? H

Answer 1

Ответ:

нав 50

Объяснение:

200. 100

------- = ---------

х. 25

100х=5000

х=50

Answer 2

To find the force $F_2$ given that $F_1 = 200$ N, $S_1 = 100 cm^2$, $S_2 = 25 cm^2$, and $H$ is unknown, you need to use the formula for pressure:

$P = \frac{F}{S}$

Where:

• $P$ is pressure (in pascals, Pa)
• $F$ is force (in newtons, N)
• $S$ is the area (in square meters, m^2)

First, you should find the pressure $P_1$ at $S_1$ and then use it to find $F_2$ at $S_2$.

For $S_1$: $P_1 = \frac{F_1}{S_1} = \frac{200\, N}{100\, cm^2} = \frac{200\, N}{0.01\, m^2} = 20,000\, Pa$

Now, you can find $F_2$ at $S_2$ using the same pressure:

$P_2 = P_1$ (Since pressure is constant in this case)

$P_2 = \frac{F_2}{S_2}$

Substituting the known values:

$20,000\, Pa = \frac{F_2}{25\, cm^2}$

Now, convert the area to square meters (1 cm^2 = 0.0001 m^2):

$20,000\, Pa = \frac{F_2}{0.000625\, m^2}$

Now, solve for $F_2$:

$F_2 = 20,000\, Pa \times 0.000625\, m^2$

$F_2 = 12.5\, N$

So, $F_2 = 12.5$ N and $H$ was not required to find $F_2$ in this case.