If a 10N tension force is exerted on a steel beam (E = 200 GPa) with cross-sectional area 1cm^2, what is the stress acting on the beam? What is the change in length of the beam, if the beam is 10cm long?
F = 10NA = 1x10^-6 m^2Therefore, Stress = 10 MPaStrain = Stress / E = 10 / 200 x10^3 = 5x10^-5 delta L = strain x length = 5x10^-4 cm = 5 micrometers
EM
Related Physics A Level answers
All answers ▸Suggest which particles will be emitted as K-40 decays to Ca-39:
How do you calculate the Earth's escape velocity?
Explain why for heavy nuclei there is imbalance in the number of protons and neutrons. Give reference to the range and particle type of the forces that influence this imbalance.
A gun of mass 10kg fires a bullet of mass 240g at a speed of 300ms-1. What is the speed of the gun's recoil?