1 A rod of a certain material is 50 mm in diameter for the first 100 mm and 25 mm in diameter for the next 100 mm. Calculate the diameter of a rod of the same material 200 mm long which will be able to absorb the same maximum amount of energy as the first rod. Given that the yield strength for the material of the rod is 300 MPa, calculate the maximum amount of energy which could be absorbed by the stepped rod. (Take E as 200 GPa.)

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A: The step by step solution for this problem is shown below.

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A:

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A:

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A:

Nanomaterials and Applications

Nanomaterials are materials that are composed of nanoparticles having a size ranging from 1 to 100 nm. The constituent particles are 100,000 times smaller than the thickness of a strand of human hair. The nanoparticles cannot be seen through naked eyes and require very high-resolution microscopes. Here, 'nm' stands for nanometer. These materials can occur naturally or can be artificially made. Artificially made nanomaterials are often called lab-engineered nanomaterials. Nanomaterials are extensively used in electronics, medical, aerospace, and other industries.