Eng. DP: Statics Principles: 01/07/25

What forces are acting on an object on a table in equilibrium?

• Gravitational force only

• Normal force only

• Gravitational force and normal force

• Frictional force only

What type of support allows horizontal movement while still providing vertical support?

• Fixed support

• Pin support

• Roller support

• Hinge support

Why might a bridge include roller supports at one end?

• To prevent horizontal movement

• To allow for thermal expansion and contraction

• To distribute vertical loads equally

• To stop rotation

What is the center of gravity (CG) of a triangle?

• The midpoint of its base

• The point where all three medians intersect

• The intersection of the altitudes

• The centroid of the base

What method is more efficient for analyzing a few specific members of a large truss?

• Joint Method

• Section Method

• Equilibrium Method

• Force Distribution Method

Why are triangles used in trusses?

• They are the easiest shape to construct

• They minimize material cost without ensuring stability

• They distribute loads effectively and prevent distortion

• They simplify calculations for engineers

Which of the following is an application of statics in engineering?

• Designing skyscrapers to resist seismic forces

• Simulating airplane flight patterns

• Calculating material fatigue in moving parts

• Analyzing dynamic forces during a storm

What is a limitation of statics analysis?

• It assumes structures experience dynamic forces

• It includes material behavior under stress

• It ignores dynamic forces and material deformation

• It simplifies real-world complexities without assumptions

Why might engineers analyze both static and dynamic forces when designing a suspension bridge?

• To reduce construction costs

• To ensure the bridge can support both stationary and moving loads

• To eliminate all dynamic forces from affecting the bridge

• To design the bridge for a fixed load only

What principle ensures the stability of buildings against tipping?

• Equilibrium

• Frictional resistance

• Elastic deformation

• Wind force distribution