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 ▸If a car is travelling over a curved hill, what is the maximum speed it can travel before losing contact with the road surface?
Why do skydivers have a terminal velocity?
Why is the classical model of light insufficient in explaining the photoelectric effect?
The roar of a tiger in a zoo can be heard by visitors at the entrance, even though the tiger can not be seen because there is a hill in the way. Name and explain this effect.