Moments Quiz
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5 questions, one answer each
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1. What is the correct equation for a moment?
- A. moment = force ÷ perpendicular distance
- B. moment = force × perpendicular distance from the pivot
- C. moment = force × velocity
- D. moment = mass × perpendicular distance
2. What are the SI units of a moment?
- A. Newtons (N)
- B. Joules (J)
- C. Newton-metres (N m)
- D. Watts (W)
3. A force of 15 N acts perpendicular to a spanner at a distance of 0.2 m from the pivot bolt. What is the moment?
- A. 3 N m
- B. 7.5 N m
- C. 75 N m
- D. 0.75 N m
4. A uniform beam is balanced on a central pivot. A 300 N weight sits 0.6 m from the pivot on one side. Where must a 450 N weight sit on the other side to balance it?
- A. 0.9 m
- B. 0.4 m
- C. 1.35 m
- D. 0.2 m
5. A light beam rests on two supports, A and B, 4 m apart. A 200 N weight is placed 1 m from support A. By taking moments about support A, what is the upward force at support B?
- A. 50 N
- B. 150 N
- C. 200 N
- D. 100 N