Atimber beam consists of three 50 x 200 mm planks fastenedtogether

to form an i-beam 200 mm wide x 300 mm deep. if theflexural stress

of point a of the cross section is 7.5 mpa (intension),

determine:

a) the flexural stress at point b of the cross section.

b) the flexural stress at point c of the cross section.

c) the flexural stress at point d of the cross section.

For each of the following process: a) sketch the p-v diagram, b)sketch t-s diagram, c) sketch t-v diagram, d) sketch the boundary work on one of the diagrams (a, b or c) and e) sketch the reversible heat transfer on one of the diagrams (a, b or c): 1- isobaric process from compressed liquid to superheated vapor 2- isothermal process from compressed liquid to superheated vapor 3- isentropic process from compressed liquid to superheated vapor