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Basic S.I. Units and its derived unit:
S.I. stands for "System International Units". There are three quantities in the Standard International Systems as concerned to Mechanics which are given below:
Meter: It is distance between the two given parallel lines engraved upon polished surface of a platinum-Iridium bar, kept at 00C at International Bureau of Weights and Measures at Serves, nearby Paris.
Kilogram: It is mass of particular cylinder made of Platinum Iridium kept at International Bureau of Weights and Measures at Serves, nearby Paris.
Second: It is 1/(24 × 60 × 60)th of the mean solar day. A solar day can be defined as the time interval between instants at which the sun crosses the meridian on two consecutive days.
With the help of the three basic units several units are derived as given below.
A truss is shown in the given figure. Compute the horizontal deflection of joint D formed by both the load and fabrication error (bar AE is 30mm too long). For
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DERIVATION & ITS SIGNIFICANCE
Q2.1 Using the stiffness method calculate axial forces and the deflections of the joints of the truss shown in the FIG. The truss was built using 50 mm x 50 mm x 5 mm SHS with E
matle cutting
bendind moment equation
Expression for normal and shear stress: Derive expression for normal and shear stress on the plane AE inclined at an angle B with AB subjected to the direct stresses of compr
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