alleryStart learning →About an axis through the centre of mass, the gravitational torque is:
AExactly zero
BVery large
CStraight up
DEver growing
Answer & Solution
Correct answer: A. Exactly zero
1. The lever arm of the weight is measured from the axis.
2. Through the centre of mass that arm is nothing.
3. So the gravitational torque is exactly zero.
_Source: OpenStax University Physics Volume 1, Chapter 12, Static Equilibrium and Elasticity._
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