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Saturday, 15 August 2026
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Physics Past Questions and Answers

Topic: Angular velocity and angular acceleration

Jamb Physics Questions - Angular velocity and angular acceleration

Question 1:
A 20-toothed gear wheel drives a 60-toothed one. If the angular speed of the smaller wheel is 120 rev s-1, the angular speed of the larger wheel is
  • A 3 rev s<sup style='font-size: smaller;'>-1</sup>
  • B 40 rev s<sup style='font-size: smaller;'>-1</sup>
  • C 360 rev s<sup style='font-size: smaller;'>-1</sup>
  • D 2400 rev s<sup style='font-size: smaller;'>-1</sup>
View Answer & Explanation
Question 2:
2311Na + Proton → pqX + alpha particle
What are the values of p and q respectively in the equation above?
  • A 10 and 20
  • B 12 and 24
  • C 20 and 10
  • D 24 and 12
View Answer & Explanation
Question 3:
A gramophone record takes 5s to reach its constant angular velocity of 4\(\pi\) rads-1 from rest. Find its constant angular acceleration.
  • A 0.4\(\pi\) rads<sup style='font-size: smaller;'>-2</sup>
  • B 0.8\(\pi\) rads<sup style='font-size: smaller;'>-2</sup>
  • C 1.3\(\pi\) rads<sup style='font-size: smaller;'>-2</sup>
  • D 20.0\(\pi\) rads<sup style='font-size: smaller;'>-2</sup>
View Answer & Explanation
Question 4:
If a wheel 1.2 m in diameter rotates at one revolation per second, calculate the velocity of the wheel.
  • A 3.6 ms<sup style='font-size: smaller;'>-1</sup>
  • B 3.77 ms<sup style='font-size: smaller;'>-1</sup>
  • C 4.0 ms<sup style='font-size: smaller;'>-1</sup>
  • D 7.5 ms<sup style='font-size: smaller;'>-1</sup>
View Answer & Explanation
Question 5:
Two balls X and Y weighing 5 g and 50 kg respectively were throne up vertically at the same time with a velocity of 100 ms1 .How will their positions be one second later?
  • A X and Y will be 500 m from each other
  • B Y will be 500 m ahead of X
  • C X will be 500 m ahead of Y
  • D X and Y both be 500 m from the poin of throw
View Answer & Explanation