A steel part with a mass of 75 kg has 0.015 m. Determine if it has a cavity inside?
| June 16, 2021 | education
If the steel part taken has a cavity, then the inequality must be fulfilled: Vf> V and Vf> m / ρс.
Constant and variable values: Vf – the actual volume of the taken steel part (Vf = 0.015 m3); m is the mass of the part (m = 75 kg); ρс – density of steel (ρс = 7800 kg / m3).
Calculation: Vph> m / ρs.
0.015> 75/7800.
0.015> 0.0096 (correct).
Answer: The taken steel part must have a cavity.
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