A cantilever thin-walled cylindrical tube of inner diameter ? = 30cm and thickness ? = 1cm is subjected to a torque T and internal pressure p as shown below. The free end of the tube is closed. Strain gauges A and B mounted on the surface of the cylinder give readings ?? = 7.5 × 10^−6 and ?b = 19.7x10^−6, respectively. The bar is made of steel having Young's modulus E=200 GPa and Poisson's ration ? = 0.3. a) Determine the torque, T, and internal pressure, p. b) Determine the absolute maximum shear strain ???? at point C.

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Unit Conversion

Standard units are also called SI units. SI units are used for measuring a physical quantity satisfying certain conditions. There are two types of units: fundamental units and derived units. Fundamental units are physical quantities that are independent, that is, they do not depend on other quantities like mass, length, or time. There are plenty of quantities in our lives which need to be measured and compared. Measuring is the comparison of a particular physical quantity with its reference value. A unit is a measure of a fixed physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.