i)What is the direction of  when the pendulum is at position 1?
Enter the letter of the arrow parallel to .
ii)What is the direction of  at the moment the pendulum passes position 2?
Enter the letter of the arrow that best approximates the direction of .
iii)What is the direction of  when the pendulum reaches position 3?
Give the letter of the arrow that best approximates the direction of .
iv)As the pendulum approaches or recedes from which position(s) is the acceleration vector  almost parallel to the velocity vector .

A)
position 2 only

B)
positions 1 and 2

C)
positions 2 and 3

D)
positions 1 and 3

Question

i)What is the direction of  when the pendulum is at position 1?
Enter the letter of the arrow parallel to .
ii)What is the direction of  at the moment the pendulum passes position 2?
Enter the letter of the arrow that best approximates the direction of .
iii)What is the direction of  when the pendulum reaches position 3?
Give the letter of the arrow that best approximates the direction of .
iv)As the pendulum approaches or recedes from which position(s) is the acceleration vector  almost parallel to the velocity vector .














 




A)
position 2 only


B)
positions 1 and 2


C)
positions 2 and 3


D)
positions 1 and 3

a	a is equal to the acceleration due to gravity.
b	a is equal to the instantaneous rate of change in velocity.
c	a is perpendicular to the bob's trajectory.
d	a is tangent to the bob's trajectory.

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Physics: Principles with Applications

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a	position 2 only
b	positions 1 and 2
c	positions 2 and 3
d	positions 1 and 3