
please can you solve it as quick as possible.

please can you solve it as quick as possible. of square cross section is built up by gluing together three strips, each 20 mm x 60 mm in cross section (see figure). The beam has a A l 500 mm. tota...
A cantilever beam AB with a circular cross section and length L = 750 mm supports a load P = 800 N acting at the free end (see figure). The beam is made of steel with an allowable bending stress of l20 MPa. Determine the required diameter d_min (figure part a) of the beam, considering the effect of the beam's own weight. Repeat part (a) if the beam is hollow with wall thickness t = d/8 (figure part b); compare...