A group of students performed a compression experiment where they placed weights on top of a cylinder of material
and measured the change in the cylinder's height. The cylinder had a radius of 2 cm, and an initial height of 10 cm. For the purposes of computing stress and strain, the change in cross-sectional area during compression can be safely neglected. This group of students would like to know what kind of material their cylinder was. The data that the students collected are shown here.
a. Calculate the Young's moduli for each of the trials shown, and then determine the average. What is the average Young's modulus, in units kN/m^2? (Hint: The number should be on the order of 1000's of kN/m^2.)
b. Calculate the standard uncertainty of the Young's modulus, in units kN/m^2.
Recently Asked Questions
- David is driving a steady 27.0m/s m/swhen he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.40m/s^2at the instant when
- A guitar string has a mass of 0.1 kg and a length of 0.60m. It is turned so that when it is strummed the fundamental harmonic is 440 Hz. (a) What is the
- Ultrasound probes can resolve structural details with sizes approximately equal to the wavelength of the ultrasound waves themselves. What is the size of the