A350-n, uniform, 1.50-m bar is suspended horizontally by two vertical cables at each end. cable a can support a maximum tension of 500.0 n without breaking, and cable b can support up to 400.0 n. you want to place a small weight on this bar. (a) what is the heaviest weight you can put on without breaking either cable, and (b) where should you put this weight?

The illuminance of a surface varies inversely with the square of its distance from the light source. if the illuminance of a surface is 120 lumens per square meter when its distance from a certain light source is 6 meters, by how many meters should the distance of the surface from the source be increased to reduce its illuminance to 30 lumens per square meter?