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Deflection is inversely proportional to moment of inertia, the larger the moment of inertia the smaller the deflection. Deflection is (with a simple centerloaded beam) is PL^3/48EI

The various deflections are as follows:

(i) for a simply supported beam with point load (center)=PL^3/48EI

(ii) // // // UDL= 5PL^4/384EI

(iii) for a cantilever with point load= PL^3/3EI

(iv) // // with UDL= PL^4/8EI

visit deflection calculator http://civilengineer.webinfolist.com/str/sdcalc.htm

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Related Questions

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Does inertia vary from place to place?

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