WAEC Physics 2024 Objective — Question 20
Question 20 of 50 from the West African Examinations Council (WAEC) Physics 2024 Objective paper, with the correct answer and a full explanation.
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20. A particle of mass 3.6x10^-6 kg revolving around the earth has a radial acceleration of 4.3x10^7 ms^-2. Calculate the centripetal force of the particle.
- A. 6.25x10^-14 N
- B. 1.55x10^2 NCorrect
- C. 1.00x10^2 N
- D. 2.00x10^-2 N
Explanation
Fc=ma=3.6x10^-6 x 4.3x10^7 = 154.8N = 1.55x10^2N.
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