The shear modulus, G, of a material can be determined by applying a torque, T, on a cylindrical material specimen and measuring the angular twist, theta. The modulus can then be calculated from: G = 2LT/pi R^4 theta where R and L are the specimen radius and length respectively The relative uncertainty in each measured variable (L, T, R, Theta) is 2.8%. What is the relative uncertainty in G due to the measured variable Theta?
Engineering
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