WAEC Physics 2013 Objective — Question 11
Question 11 of 50 from the West African Examinations Council (WAEC) Physics 2013 Objective paper, with the correct answer and a full explanation.
Advertisement
Four co-planar forces of magnitudes 10N, 17N, 6N and 20N act at point O as shown in the diagram above. Determine the magnitude of the resultant force.
- A. 53.0N
- B. 21.0N
- C. 7.0N
- D. 5.0NCorrect
Explanation
Vertical component = (10−6)N = 4N. Horizontal component = (20−17)N = 3N. Resultant R = √(4²+3²) = √25 = 5N.
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.