1. The problem statement, all variables and given/known data Spider Silk has a Young Modulus of 4.0x10^9 N/m^2 and can withstand stresses of up to 1.4x10^9 N/m^2. A single webstrand has a cross sectional area of 1.0x10^-11 m^2, and a web is made up of 50 radial strands. A bug lands in the centre of a horizontal web. With what mass should the bug be to exert this maximum stress? 2. Relevant equations F/A = 1.4x10^9 N/m^2 3. The attempt at a solution F/A = 1.4x10^9 N/m^2 mg / A = 1.4x10^9 N/m^2 A = 50 strands * 1.0x10^-10 N/m^2 = 5.0x10^-10 so m = (1.4x10^9 N/m^2)(5.0x10^-10) / 9.8 m = 71.4g HOWEVER, the answer is 48 grams. I am unsure of what to do with the area. Like, I'm pretty sure that I am messing that portion up.