Saturday

April 18, 2015

April 18, 2015

Posted by **fred** on Saturday, November 3, 2007 at 12:17am.

- Physics -
**drwls**, Saturday, November 3, 2007 at 12:28amThey give you Young's moduls of the concrete, Y = 2.3*10^10 N/m^2

The pedestal area is A = 7.2*10^-2 m^2

Use the elastic law that

stress = (strain)*Y

In this case,

strain = compression/length

Therefore

compression = Length*strain

= Length*stress/Y

= Length *(weight)/[(area)*Y]

Don't forget that weight = M g, so

compression = L M g/[(area)*Y]

**Answer this Question**

**Related Questions**

maths help - Hi MY question is if a cylinder has a volume of 72cm cubed and a ...

Physics - An open tube of length L = 1.60 m and cross-sectional area A = 4.60 ...

7th grade - what is lateral and total surface area? What does "B" stand for? ...

physics - Water flows steadily from an open tank into a pipe. The elevation of ...

Physics - A brass wire with Young's modulus of 9.20 1010 Pa is 2.5 m long and ...

phys - Water flows steadily from an open tank into a pipe as shown in the figure...

Physics - This problem compares some energy properties of two motor vehicles: ...

physics - A 92-kg man's thighbone has a relaxed length of 0.56 m, a cross-...

Physics - A total charge of 16ìC passes through a cross-sectional area of a ...

Physics - Two wires have the same length and the same resistance but are made up...