Resultant forces and dynamics in a plane

Resultant forces and dynamics in a plane Quiz

Spec 8.5 · Edexcel A-Level Maths: Quiz

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5 questions, one answer each

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1. Find the resultant of 5 N east and 12 N north.
- A. $13$ N
- B. $17$ N
- C. $7$ N
- D. $60$ N
2. Two forces of 10 N act at $120^\circ$ to each other. Find the magnitude of the resultant.
- A. $20$ N
- B. $10$ N
- C. $17.3$ N
- D. $0$ N
3. A resultant force of 12 N acts on a 3 kg particle. What is its acceleration?
- A. $36\ \text{m s}^{-2}$
- B. $9\ \text{m s}^{-2}$
- C. $0.25\ \text{m s}^{-2}$
- D. $4\ \text{m s}^{-2}$
4. A force of 20 N acts on a bearing of $030^\circ$ . Find its northerly component.
- A. $10$ N
- B. $34.6$ N
- C. $17.3$ N
- D. $20$ N
5. A particle is in equilibrium under 9 N east, 12 N north and a third force. Which describes the third force?
- A. 15 N on bearing $037^\circ$
- B. 15 N on bearing $217^\circ$
- C. 15 N on bearing $053^\circ$
- D. 21 N on bearing $217^\circ$