- #1
musicfairy
- 101
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A simple pendulum has a period of 2 s for small amplitude oscillations.
1. The length of the pendulum is most nearly
(A) l/6 m
(B) ¼ m
(C) ½ m
(D) 1 m
(E) 2 m
I used the period of a pendulum equation, did some algebra, and got D as the answer. Is this correct?
2. Which of the following equations could represent the angle θ that the pendulum makes with the vertical as a function of time t?
(A) θ = θmax sin (π/2)t
(B) θ = θmax sin πt
(C) θ = θmax sin 2πt
(D) θ = θmax sin 4πt
(E) θ = θmax sin 8πt
I don't get this one. I'm assuming it's C because 2π = ω in a lot of equations and maybe it's true here too? Can someone please explain this?
1. The length of the pendulum is most nearly
(A) l/6 m
(B) ¼ m
(C) ½ m
(D) 1 m
(E) 2 m
I used the period of a pendulum equation, did some algebra, and got D as the answer. Is this correct?
2. Which of the following equations could represent the angle θ that the pendulum makes with the vertical as a function of time t?
(A) θ = θmax sin (π/2)t
(B) θ = θmax sin πt
(C) θ = θmax sin 2πt
(D) θ = θmax sin 4πt
(E) θ = θmax sin 8πt
I don't get this one. I'm assuming it's C because 2π = ω in a lot of equations and maybe it's true here too? Can someone please explain this?