Forces: Systems of Forces, Moments & Stress is one of 9 topics in the Grade 11 Mechanical Technology CAPS syllabus, covered across 3 lessons on Study Vault. Below are real practice questions from this topic with full worked answers.
Sample practice questions
Easy
1. What does Bow's notation label in a force diagram?
The spaces between the forces, using capital letters
The forces themselves, using lowercase letters only
The pivot points of a beam
The colours used in the diagram
Answer: The spaces between the forces, using capital letters — Bow's notation labels the spaces between forces (not the forces themselves) with capital letters, so each force can be identified by the two letters of the spaces on either side of it.
Easy
2. How many forces act at a point for the triangle of forces method to apply?
Exactly three forces
Exactly two forces
Exactly five forces
Any number greater than ten
Answer: Exactly three forces — The triangle of forces applies when exactly three forces act on a point in equilibrium, drawn to scale one after another to form a closed triangle.
Medium
3. Name the single force that has the same overall effect as all individual forces in a system acting together.
Answer: resultant — The resultant of a system of forces is the single force that would have the same overall effect as all the individual forces acting together.
