Physics Rotational & Circular Motion SZABMU 2024
PMDC Verified Question 3 of 95
The instantaneous acceleration of an object travelling with uniform speed in a circle directed towards the center of circle is referred as ____
A
Angular acceleration
B
Centrifugal acceleration
C
Centripetal acceleration
D
Tangential acceleration
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Centripetal acceleration
Concept:

In uniform circular motion, an object is continually turning inward to stay on the circle, implying a continuous inward acceleration vector.

Solution:

  • The term 'centripetal' stems from Latin words literally translating to 'center-seeking'.
  • Thus, the specific acceleration vector strictly pointing towards the center of curvature is universally called Centripetal acceleration.


Why other options are incorrect:

  • Option A relates to the change in rotational speed (spin rate), which is zero here.
  • Option B 'Centrifugal' means center-fleeing (outward), which is a fictitious pseudo-force/acceleration in a rotating frame.
  • Option D relates to speeding up or slowing down along the track.

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