Bending Stress and Beam Supports: Understanding Shear and Moment Diagram

The video tutorial explains bending stress using a wooden plank example. It covers different types of stress, including tensile, compressive, and shear stresses. The tutorial discusses beam support types such as pinned, roller, and fixed, and their reactions. It also explains equilibrium equations and static indeterminacy. The video concludes with a summary of bending stress and beam supports.

What type of stress causes a beam to sag in the middle?

• Compressive stress

• Tensile stress

• Shear stress

• Bending stress

What is a moment in the context of forces acting on a beam?

• A force that shortens a beam

• A force that acts perpendicular to the cross-section

• A measure of a force's tendency to cause rotation

• A force that acts parallel to the cross-section

Which type of beam support allows for rotation but not transverse movement?

• Fixed support

• Roller support

• Pinned support

• Rigid support

What is an example of a roller support in real life?

• A flagpole set

• A bridge support

• A door hinge

• A balcony

What happens when a beam is in static equilibrium?

• The beam rotates freely

• The forces in each direction are balanced

• The beam experiences no stress

• The beam is statically indeterminate

What does it mean if a beam is statically indeterminate?

• The beam is experiencing only shear stress

• There are more unknowns than equations to solve

• The beam is in static equilibrium

• The beam has no supports

How can internal forces in a beam be represented?

• Using only tensile stress diagrams

• Using only equilibrium equations

• Using shear and moment diagrams

• Using compressive stress diagrams