For a particular load distribution and support condition in a beam of length 'L', bending moment at any section 'x' (O < x < L) is given by M(x) = Ax - Bx², where A and B are constants. The shear force in the beam will be zero at 'x' equal to
- A. A/2B
- B. A/B
- C. 2A/B
- D. A²/B
Answer: A. A/2B
Explanation: Shear force V = dM/dx = A - 2Bx. For V=0, A-2Bx = 0 => x = A/2B.