A beam having a uniform square cross-section is '2' metre long supported in bearings at its ends carries a flywheel weighing '25' kN at the centre, subjected to load which varies from 70' N to '200' N. 

Determine the width and depth of a uniform square plate. 

The yield strength of the materials is '850' MPa and the endurance strength '550' MPa with FOS = 2. Other correction factors may be taken as follows: 

For axial loading (Ka) = 0.7; 

For machined surface (Ksur) = 0.8 ; 

For size (Ksz) = 0.85 ; 

For stress .concentration (Kf)=1.0