A vertical steel beam in a building supports a load of 7.2  104 N. (a) If the length of the beam is 4.0 m and its cross-sectional area is 7.1  10-3 m2, find the distance the beam is compressed along its length. (b) What maximum load in newtons could the steel beam support before failing?     A cable used to lift heavy materials like steel I-beams must be strong enough to resist breaking even under a load of 1.3  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? (b) By how much will a 9.0-m length of this cable stretch when subject to the 1.3  106-N load?

University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter12: Static Equilibrium And Elasticity
Section: Chapter Questions
Problem 38P: A uniform horizontal strut weighs 400.0 N. One end of the strut is attached to a hinged support the...
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A vertical steel beam in a building supports a load of 7.2  104 N.
(a) If the length of the beam is 4.0 m and its cross-sectional area is 7.1  10-3 m2, find the distance the beam is compressed along its length.
 

(b) What maximum load in newtons could the steel beam support before failing?
 
 
A cable used to lift heavy materials like steel I-beams must be strong enough to resist breaking even under a load of 1.3  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?
 

(b) By how much will a 9.0-m length of this cable stretch when subject to the 1.3  106-N load?
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