Physics JAMB

What is the magnitude of the couple which acts on a rotating circular disc of radius 2m; if a constant tangential force of 2N is responsible for the rotation.
What is the magnitude of the couple which acts on a rotating circular disc of radius 2m; if a constant tangential force of 2N is responsible for the rotation.What is the magnitude of the couple which acts on a rotating circular disc of radius 2m; if a constant tangential force of 2N is responsible for the rotation.

A. 15Nm
B. 25Nm
C. 3Nm
D. 4Nm

Correct Answer:

Option D – 4Nm

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