JAMB Physics 2019 Objective — Question 17
Question 17 of 40 from the Joint Admissions and Matriculation Board (JAMB) Physics 2019 Objective paper, with the correct answer and a full explanation.
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An object weighing 200kg hangs at the end of a rope. If g=9.8m/s², what is the acceleration, when the tension in the rope is 2000N?
- A. 20m/s²
- B. 25m/s²
- C. 2000m/s²
- D. 0.2m/s²Correct
Explanation
Resultant force = T−mg = 2000−200(9.8) = 2000−1960 = 40N. F=ma ⇒ a=40/200=0.2m/s².
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