Mathematical modelling in mechanics Quiz
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5 questions, one answer each
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1. Which modelling assumption means that the tension is the same throughout a rope?
- A. The rope is inextensible
- B. The rope is light
- C. The rope is rough
- D. The rope is rigid
2. A ball is modelled as a particle. Which is ignored?
- A. Its mass
- B. Its weight
- C. Its size
- D. Gravity
3. Over a light smooth pulley, the tension in the string is:
- A. The same on both sides
- B. Greater on the heavier side
- C. Zero on the lighter side
- D. Greater on the lighter side
4. Treating a floor as smooth in a model of a sliding crate means the model's acceleration is likely to be:
- A. Too small
- B. Exactly correct
- C. Too large
- D. Zero
5. Which of these describes a uniform rod?
- A. It has no mass
- B. Its weight acts at one end
- C. It can stretch
- D. Its mass is evenly distributed so its weight acts at the midpoint