ISRO Mechanical & Aerospace 2008 - Question 74

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Topic: Strength of Materials

A beam AB is hinge-supported at its ends and is loaded by couple P.C as shown in the figure. The magnitude of shearing force at a section x of the beam is

Figure for question 74, ISRO Mechanical & Aerospace 2008

  • A. 0
  • B. P
  • C. P/2L
  • D. P.C/2L

Answer: D. P.C/2L

Explanation: Let the length of the beam be 2L. Sum of moments about B: RA * 2L = P.C, thus RA = P.C / 2L. Since RA + RB = 0, the shear force at any section x is equal to RA = P.C / 2L.

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