Question: What is the formula for calculating the bending stress in a beam?

Options:

1. σ = My/I
2. σ = F/A
3. σ = Eε
4. σ = VQ/It

Correct Answer: σ = My/I

Solution:

The bending stress in a beam is calculated using the formula σ = My/I, where M is the bending moment, y is the distance from the neutral axis, and I is the moment of inertia.