Direction: A massless beam has a loading pattern as shown in the figure. The beam is of rectangular crosssection with a width of 30 mm and height of 100 mm.
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The maximum bending moment occurs at
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- location B
- 2675 mm to the right of A
- 2500 mm to the right of A
- 3225 mm to the right of A
Correct Option: C
RA = 1500 N
RB = 4500 N
SF = RA –3000 (x–2)
SFx=2 = 1500 SFx=4 = –4500
SF = 1500 – 3000 (x–2) = 0 [For max BM]
x = 2.5 m
x = 2500 mm from A.
