alleryStart learning →A person applies a 12 N force 1.0 m from a pivot point, perpendicular to the lever arm. How much torque results?
A1/144 N.m
B1/12 N.m
C12 N.m
D144 N.m
Answer & Solution
Correct answer: C. 12 N.m
1. tau = rF sin(theta), with theta = 90 degrees since the force is perpendicular.
2. tau = (1.0 m)(12 N)(1).
3. tau = 12 N.m.
_Source: OpenStax Physics (CC BY 4.0), Ch 6 "Circular and Rotational Motion", section 6.3 Rotational Motion_
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