A solid metal cube with an edge length of 20 mm is placed on a very...
A solid metal cube with an edge length of 20 mm is placed on a very smooth flat table. A mass of 100 kg is balanced on top of it (i) Ignoring the self-weight of the cube, calculate the stress acting on it. Assume g = 9.81 m/s2. (ii) If the Young’s modulus of the cube material is 100 GPa, and assuming negligible friction between the cube and the table, calculate the resulting decrease in height of the cube.
Homework Answers
m=lookg 20mmy I cube 120mm Area of Cube (20 x103) = 4810 m2 lieight of Cube = 100X9.84 980N stress acting on lube, a = - = 9 480 X 20 XICS 2.45 XlObx loox109 Gi) E = 100 Gila sla estos Resulting decrease in height, st = 8 x1617 m » slo 8x1014 mm
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A solid metal cube with an edge length of 20 mm is placed on a
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