Physics Guide
Sign in
Back to Problems
F = ma (Final Problems)
Dynamics
FMA-2018B-20 · 2018B F = ma (AAPT)

2018 F = ma Exam B — Question 20

A massive, uniform, flexible string of length L is placed on a horizontal table of length L/3 that has a coefficient of friction µ = 1/7, so equal lengths L/3 of string hang freely from both sides of the table. s The string passes over the edges of the table on smooth, frictionless, curved surfaces. Now suppose that one of the hanging ends of the string is pulled a distance x downward, then releas
Source: Question 20, 2018 F = ma Exam B, © 2018 American Association of Physics Teachers (AAPT) and the U.S. Physics Team. Adapted by PhysicsTrainer: reformatted into a separate question and answer choices for online multiple-choice practice; any shared setup from nearby questions is repeated here. Not affiliated with or endorsed by AAPT or the U.S. Physics Team.