- #1

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- Homework Statement
- At the instant its angular displacement is 0.32 rad, the angular acceleration of a physical pendulum is -630 rad/s2. What is its angular frequency of oscillation?

A) 6.6 rad/s

B) 14 rad/s

C) 20 rad/s

D) 44 rad/s

E) 200 rad/s

The answer is D

- Relevant Equations
- ω^2 = (ωo)^2 + 2αθ

ω^2 - (ωo)^2

= 2 (-630) (0.32)

= -403.2

This is what I have now and I stuck here.

= 2 (-630) (0.32)

= -403.2

This is what I have now and I stuck here.