hi using 1kg=9.8N i have worked out a figure to 11.67 but i am not sure about the units
σ=12000kgms¯² x 9.8 = 117600 Nms¯²
σ=F/A rearranged A=F/σ
A=117600Nms¯²/1100NM m¯²
A=106.9
πr²=106.9 rearranged r = A/π then √answer
106.9/π =34.03...
Hi I have the formula for stress which is σ=F/A the figure given for that is 1100MN m¯² and the force which is 1200kg x 10ms¯² as the formula F= m x g
when i rearange the formula to A=F/σ A=12000Nms¯²/1100MN m¯²
i then get a bit lost as what to with the units to get a figure for the area...
I have started a home study course in mechanical engineering, I now realize that I should have started with a math’s course but any way I have a question that I could do with some help with. A designer wishes to calculate the thickness (diameter) of a steel cable for suspending a passenger lift...