A simply supported beam of length L is subjected to a varying

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A simply supported beam of length L is subjected to a varying distributed load sin (3πx/L) Nm^-1, where the distance x is measured from the left support. The magnitude of the vertical reaction force in N at the left support is

1. zero
2. L/3π
3. L/π
4. 2 L/π

Correct Option: B

By symmetry, R₁ = R₂ = P/2