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A simply supported beam PQ is loaded by a moment of 1 kNm at the mid-span of the beam as shown in the figure. The reaction forces Rp and RQ at supports P and Q respectively are
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- 1 kN downward, 1 kN upward
- 0.5 kN upward, 0.5 kN downward
- 0.5 kN downward, 0.5 kN upward
- 1 kN upward, 1 kN upward
Correct Option: A
Take moments about ‘Q’
RQ × 1 – 1= 0
⇒ RQ = 1kN ↑
But RP + RQ = 0
∴ RP = – RQ = – 1 kN
⇒ RP = = 1kN ↓
