- #1
physgrl
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- 0
Homework Statement
9. A force can change angular rotational if it acts through:
a. the axis of rotation
*b. a lever arm tangential to the direction of rotation
c. a moment arm parallel to the axis of rotation
d. none of these
Homework Equations
n/a
The Attempt at a Solution
I would like to understand why b is the correct answer.