If an object the size of the empire statbuilding had iron density,what would be .

  • Thread starter promeus
  • Start date
  • #1
27
0
If an object the size of the empire statbuilding had iron density,what would be .....

the mass of it?

The estimated volume of the empire state building is 37 million cubic feet,how could I calculate the mass of this solid object if it had a density of Iron(which would be 7870 kg/m³)?
 

Answers and Replies

  • #2
HallsofIvy
Science Advisor
Homework Helper
41,833
963


Multiply the density by the volume.
 
  • #3
27
0


So I converted the ft^3 to m^3 and I have 1.04 million m^3* 7870kg/m^3=8184800000 kg/m^3.Did I do this right or do I have to remove the kg/m^3?
 
  • #4
27
0


Wow if I am correct is that over 8 billion kilograms of mass?
 
  • #5
27
0


So here is a follow up question,how much energy would be required to propel this object at Mach 7 speeds?
 
  • #6
867
61


1/2 mv2

m=mass in kg
v=speed in meters / second

That would be if the propulsion device was 100% efficient and there was no air resistance.
 

Related Threads on If an object the size of the empire statbuilding had iron density,what would be .

Replies
4
Views
869
Replies
7
Views
578
  • Last Post
Replies
13
Views
2K
  • Last Post
Replies
2
Views
5K
  • Last Post
Replies
4
Views
10K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
13
Views
13K
  • Last Post
Replies
1
Views
492
Replies
1
Views
6K
Top