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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. Point O and J are pin connections. A block of 90 kN rests on the platform as shown in the figure.

The magnitude of horizontal component of the reaction (in kN) at pin O, is
  • a)
    180
  • b)
    150
  • c)
    90
  • d)
    120
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
A rigid weightless platform PQRS shown in the figure (not drawn to the...

Σy = 0
⇒ Ro sin 36.87 – 90 = 0

Horizontal reaction at O = Ho
= Ro cos 36.87 = 150 × cos 36.87
= 120 kN
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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. Point O and J are pin connections. A block of 90 kN rests on the platform as shown in the figure.The magnitude of horizontal component of the reaction (in kN) at pin O, isa)180b)150c)90d)120Correct answer is option 'D'. Can you explain this answer?
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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. Point O and J are pin connections. A block of 90 kN rests on the platform as shown in the figure.The magnitude of horizontal component of the reaction (in kN) at pin O, isa)180b)150c)90d)120Correct answer is option 'D'. Can you explain this answer? for GATE 2024 is part of GATE preparation. The Question and answers have been prepared according to the GATE exam syllabus. Information about 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. Point O and J are pin connections. A block of 90 kN rests on the platform as shown in the figure.The magnitude of horizontal component of the reaction (in kN) at pin O, isa)180b)150c)90d)120Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for GATE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for 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. Point O and J are pin connections. A block of 90 kN rests on the platform as shown in the figure.The magnitude of horizontal component of the reaction (in kN) at pin O, isa)180b)150c)90d)120Correct answer is option 'D'. Can you explain this answer?.
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