Use the worked example above to help you solve this problem. A vertical steel beam in a building supports a load of 10 x 104 N. (a) If the length of the beam is 4.0 m and its cross-sectional area is 12 x 10'3 m2, nd the distance the beam is compressed along its length. .000215 3: Your response differs from the correct answer by more than 10%. Double check your calculations. m (b) What maximum load in newtons could the steel beam support before failing? 5192000 x Your response differs from the correct answer by more than 10%. Double check your calculations. N EXERCISE HINTS: GETTING STARTED I I'M STUCK! A cable used to lift heavy materials like steel I-beams must be strong enough to resist breaking even under a load of 1.8 X 106 N. For safety, the cable must support twice that load. (a) What cross-sectional area should the cable have if it's to be made of steel? .00419 x Make sure you are looking up the appropriate constant and using the proper relationship. In this case, you should be using the tensile strength of steel, because that is the force per cross- sectional area at which steel breaks. n"-2 (b) By how much will a 6.0-m length of this cable stretch when subject to the 1.3 x 105-N load? a: Make sure you are using the appropriate constant and the correct relationship. In this case, you should be using Young's modulus for steel, because that is telling you how far the steel will stretch when a load is placed on it. in