Question

P P 12 mm 5.85 A D B C 48 mm 12 mm 96 mm 0.4 m 0.2 m 0.2 m Fig. P5.85 Determine the largest permissible value of P for the beam and loading shown, knowing that the allowable normal stress is +80 MPa in tension and -140 MPa in compression.

          P
P
12 mm
5.85
A
D
B
C
48 mm
12 mm
96 mm
0.4 m
0.2 m
0.2 m
Fig. P5.85
Determine the largest permissible value of P for the beam
and loading shown, knowing that the allowable normal stress is
+80 MPa in tension and -140 MPa in compression.

P
P
12 mm
5.85
A
D
B
C
48 mm
12 mm
96 mm
0.4 m
0.2 m
0.2 m
Fig. P5.85
Determine the largest permissible value of P for the beam
and loading shown, knowing that the allowable normal stress is
+80 MPa in tension and -140 MPa in compression.

Added by Aaron W.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Adi S

06/24/2024

Step 1

Let $R_A$ and $R_D$ be the reactions at supports A and D, respectively. Since the beam is symmetrically loaded, $R_A = R_D$. The sum of vertical forces is: $2P - R_A - R_D = 0$ $2P - 2R_A = 0$ $R_A = R_D = P$ Show more…

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P P 12 mm 5.85 A D B C 48 mm 12 mm 96 mm 0.4 m 0.2 m 0.2 m Fig. P5.85 Determine the largest permissible value of P for the beam and loading shown, knowing that the allowable normal stress is +80 MPa in tension and -140 MPa in compression.