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 ▸Explain, using appropriate laws of motion, why the air exerts a force on the engine in the forward direction.
What are the similarities and differences between an elastic and an inelastic collision?
Explain the forces involved in a pendulum set up.
What is the Centripetal force, and how does it keep objects in circular motion?