At max amplitude, the bob's acceleration is at a maximum.
A. At max amplitude, the bob's displacement from its equilibrium position is at a maximum. The component of the tension counteracting the bob's weight is at a minimum, so there is max net force at max amplitude. Therefore, there must also be max acceleration.
B. At max amplitude, the bob's velocity is at a maximum.
C. At max amplitude, the bob's displacement is zero.
D. At max amplitude, the bob's acceleration is zero.
Answer:A
At max amplitude, the bob's acceleration is at a maximum.
A. At max amplitude, the bob's displacement from its equilibrium position is at a maximum. The component of the tension counteracting the bob's weight is at a minimum, so there is max net force at max amplitude. Therefore, there must also be max acceleration. B. At max amplitude, the bob's velocity is at a maximum. C. At max amplitude, the bob's displacement is zero. D. At max amplitude, the bob's acceleration is zero.