Physics Rotational & Circular Motion BUMHS 2022
PMDC Verified Question 61 of 95
The best example of uniform circular motion is:
A
The motion of the earth around the sun
B
The motion of a mass attached with a string on a vertical circle
C
The motion of a minute hand in the clock
D
The motion of a spinning top
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: The motion of a minute hand in the clock
Concept:

Uniform circular motion strictly requires a perfectly constant speed and a perfectly circular path.

Solution:

  • The minute hand of an analog clock is meticulously geared to travel its circular path at a flawless, unchanging angular speed without speeding up or slowing down.


Why other options are incorrect:

  • Option A is an elliptical orbit where Earth changes speed (faster at perihelion, slower at aphelion).
  • Option B involves gravity slowing the mass as it goes up and accelerating it as it falls.
  • Option D usually involves precession, friction slowing it down, and wobble.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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