# Force meter

We put the statuette on the force meter. The force meter showed a value 25 N. Then we placed the statuette on the force meter completely immersed in the water. The force meter showed a value 17 N. What is the volume of the statuette?

Result

V =  0.8 l

#### Solution:

$F_{ 1 } = 25 \ N \ \\ F_{ 2 } = 17 \ N \ \\ F_{ 2 } = F_{ 1 } - mg \ \\ F_{ 2 } = F_{ 1 } - Vhg \ \\ g = 10 \ m/s^2 \ \\ h = 1 \ kg/l \ \\ V = (F_{ 1 }-F_{ 2 })/(h \cdot \ g) = (25-17)/(1 \cdot \ 10) = \dfrac{ 4 }{ 5 } = 0.8 = 0.8 \ \text{ l }$

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