Question

A 35-L block of ice (density at 0.9167 g/cm3) sits on a surface that is 25 inches wide and 16 inches long on Mars, where the acceleration due to gravity is only 38.74% that of Earth’s. Express the pressure exerted on this surface using atmospheres.

Answer 1

m = $\frac{V}{ρ}$ = 35000 / 0.9167 = 38180.43 g = 38.18043 kg

S = 25$\times$16 = 400 in² = 0.258 m²

P = $\frac{mg}{S}$ = $\frac{38.18043\times(0.3874\times9.81)}{0.258}$ = 562.4 Pa = 0.00555 atm.