Created by StemPy LabThe sag of a beam loaded at its middle goes as . A footbridge is rebuilt twice as long, with the same beam section and load. How does its sag change?
← All Quizzes
← A steel cable of radius 1.0 cm breaks at a stress of 3.0 × 10⁸ Pa. With a safety factor of 4, what is the largest mass it should lift? (g = 9.8 m/s².)A wooden plank is 12 cm wide and 4 cm thick. The sag of a beam goes as 1/bd³. How many times less does it sag when placed on its narrow edge (depth 12 cm) than when laid flat (depth 4 cm)? →
Discussion (0)
Log in to join the discussion.
Loading…