For a cantilever beam with a uniformly distributed load, what is the formula for

Practice Questions

Q1
For a cantilever beam with a uniformly distributed load, what is the formula for the maximum deflection at the free end?
  1. 5wL^4/384EI
  2. wL^4/8EI
  3. wL^3/3EI
  4. wL^4/12EI

Questions & Step-by-Step Solutions

For a cantilever beam with a uniformly distributed load, what is the formula for the maximum deflection at the free end?
  • Step 1: Understand what a cantilever beam is. A cantilever beam is fixed at one end and free at the other end.
  • Step 2: Know that a uniformly distributed load (w) means the load is spread evenly along the length of the beam.
  • Step 3: Identify the length of the beam (L) from the fixed end to the free end.
  • Step 4: Recognize that E is the modulus of elasticity of the material, which measures how stiff the material is.
  • Step 5: Understand that I is the moment of inertia, which depends on the shape of the beam's cross-section.
  • Step 6: Use the formula for maximum deflection (δ) at the free end of the cantilever beam, which is δ = 5wL^4 / 384EI.
  • Cantilever Beam Deflection – The maximum deflection of a cantilever beam under a uniformly distributed load is derived from beam theory, specifically using the relationship between load, material properties, and geometry.
  • Uniformly Distributed Load – Understanding how a uniformly distributed load affects the bending and deflection of beams is crucial for structural analysis.
  • Material Properties – The formula incorporates the modulus of elasticity (E) and the moment of inertia (I), which are essential for determining how materials respond to loads.
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