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 ▸Convection, conduction and radiation in space
Derive the kinetic theory equation pV=Nm/3(crms2) for an ideal gas.
Why does the rate of change of potential difference between two capacitor plates decrease as the capacitor discharges?
Derive an expression for the centripetal acceleration of a body in uniform circular motion.