Answer:
6613.87 lbs
Explanation:
1.2 m³ = 1200000 cm³
Mass = Density * Volume
M = (2.5 g/cm³) * 1200000 cm³ = 3000000 g
1 lb = 453.592 g
3000000 g * (1 lbs / 453.592 g) = 6613.87 lbs
The mass of the rock is 6613.87 lbs.
Mass is the quantity of matter in a physical body and the weigh is used to measure ascertain the heaviness of by or as if by a balance.
Given that volume of the rock is 1.2 meter cube and density is 2.5 gram/cm cube. The height of the rock is 4 feet. The mass can be calculated as given below.
Mass m = Density w [tex]\times[/tex] Volume v
Substituting the values in the above equation.
[tex]m = 2.5 \;\rm g/cm^3 \times 1.2\;\rm m^3[/tex]
[tex]m = 2.5 \times 1.2 \times 1000000[/tex]
[tex]m = 3000000\;\rm g[/tex]
The mass of the rock is 3000000 g. We know that
[tex]1\;\rm lb = 453.592\;\rm g[/tex]
[tex]1\;\rm g = \dfrac {1}{453.592} \;\rm lb[/tex]
Now convert the mass (grams) into mass (lbs).
[tex]m = \dfrac {1}{453.592}\times 3000000\;\rm lbs[/tex]
[tex]m = 6613.87 \;\rm lbs[/tex]
Hence we can conclude that the mass of the rock is 6613.87 lbs.
To know more about the mass, follow the link given below.
https://brainly.com/question/15959704.
