5. A circular aluminum tube of length L =400 mm is loaded in compression by forces P (see figure). The outside and inside diameters are 60 mm and 50 mm, respectively. A strain gage is placed on the outside of the bar to measure normal strains in the longitudinal direction. (a) If the measured strain is e = 550 x10“, what is the shortening 6 of the bar? (b) If the compressive stress in the bar is intended to be 40 MPa, what should be the load P? Strain gage L=D400 mm-
5. A circular aluminum tube of length L =400 mm is loaded in compression by forces P (see figure). The outside and inside diameters are 60 mm and 50 mm, respectively. A strain gage is placed on the outside of the bar to measure normal strains in the longitudinal direction. (a) If the measured strain is e = 550 x10“, what is the shortening 6 of the bar? (b) If the compressive stress in the bar is intended to be 40 MPa, what should be the load P? Strain gage L=D400 mm-
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Transcribed Image Text:5. A circular aluminum tube of length L =400 mm is loaded in compression by forces P (see figure). The
outside and inside diameters are 60 mm and 50 mm, respectively. A strain gage is placed on the outside of
the bar to measure normal strains in the longitudinal direction.
(a) If the measured strain is e = 550 x10“, what is the shortening 6 of the bar?
(b) If the compressive stress in the bar is intended to be 40 MPa, what should be the load P?
Strain gage
L=400 mm
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