Structures and Forces
Alberta Topic D: Structures and Forces.
9 questions, free, marked as you go with a worked explanation on every one.
What this covers
- structures and forces
The questions
- The external force or weight that a structure has to support is called:
- A structure's ability to stay upright and resist tipping over is called its:
- Triangles are commonly used in structures like bridges because they are:
- A structure supports a load of 50 N on one side and 30 N on the other. What is the total load, in Newtons?
- A shelf sags downward in the middle when heavy books are placed on it. What internal force is acting along the underside of the shelf?
- Why does a wide base make a tall structure harder to tip over?
- A bench is designed to seat 5 people with an average weight of 700 N each. Engineers build in a safety factor of 2, meaning it must carry twice the expected load. What total load must the bench be built to carry, in newtons?
- Which of these are internal forces that act within structures? Select all that apply.
- Use the table. An engineer needs to choose the beam shape that can carry the greatest load before bending. Which shape should they choose?