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Out of the following pair, which one does NOT have identical dimensions?
- Impulse and momentum
- Angular momentum and planck’s constant
- Work and torque
- Moment of inertia and moment of a force
Correct answer: Moment of inertia and moment of a force
Solution
Moment of inertia is a measure of an object's resistance to rotational motion and has dimensions of mass times distance squared, while the moment of a force (torque) has dimensions of force times distance, which are different.
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