1.Two rods are made from materials that havedifferent Young\'s moduli. The rods

Question

1.Two rods are made from materials that havedifferent Young's moduli. The rods are constructed to have the samelength and same cross-sectional area. The same force is hung fromthe end of each rod. The rod with the smaller Young's modulus willstretch more than the rod with the larger Young's modulus.
true or false? 2. A 1000 N weight is hanging from a 2 m longaluminum rod. A 500-N weight is hanging from a 1 m long aluminumrod. Which rod is under the greater tensile stress? 1.Two rods are made from materials that havedifferent Young's moduli. The rods are constructed to have the samelength and same cross-sectional area. The same force is hung fromthe end of each rod. The rod with the smaller Young's modulus willstretch more than the rod with the larger Young's modulus.
true or false? 2. A 1000 N weight is hanging from a 2 m longaluminum rod. A 500-N weight is hanging from a 1 m long aluminumrod. Which rod is under the greater tensile stress?

Explanation / Answer

young modulas = Y = L dF/AdL where dL is the change in length = strechedlength so Y is inversily proptional to strechedlength so above statement is true. 2)   stress developed in a body depends uponthe way in which external force applied on the body so both bodies have same tensile force.

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