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GATE Civil Engineering (CE) 2020 Shift 1 Solved Paper
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© examsnet.com
Question : 45
Total: 65
A rigid weightless platform PQRS shown in the figure (not drawn to the scale) can slide freely in the vertical direction. The platform is held in position by the weightless member OJ and four weightless, frictionless rollers, Points O and J are pin connections. A block of 90 kN rests on the platform as shown in the figure
magnitude of horizontal component of the reaction (in kN) at pin O, is
90
120
150
180
Validate
Solution:
Since the vertical load is resisted by bar OJ only
FBD of OJ
Σ
M
]
=
0
H
0
×
3
+
90
×
4
=
0
H
0
=
120
k
N
© examsnet.com
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