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Two masses hang from a rope over a light frictionless pulley. Along that rope the tension is:
AExtra
BEmpty
CEased
DEqual
Answer & Solution
Correct answer: D. Equal
1. The pulley has negligible mass and no friction.
2. Nothing along the rope can change the pull it carries.
3. So the tension is equal throughout the string.
_Source: OpenStax University Physics Volume 1, Chapter 6, Applications of Newton's Laws._
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