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A uniform steel rope 250 m long hangs down a shaft. Find the elongation of the first 125 m at the top if the density of steel is 7840 kg/m3 and Young's modulus is 200 GN/m*.

A very curious student was studying electricity and had An unconventional idea. He envisioned two spheres of Same radius R and with volumetric distributions of charge +ρ and -ρ Respectively,...

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