- #1

songoku

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- Homework Statement
- A disk is suspended by a nail such that the pivot in a vertical plane about a point on the edge of the disk. If the period of oscillation of the disk is 1.25 s, what is the disk's radius?

a. 26 cm

b. 78 cm

c. 51 cm

d. impossible to know without the disk's mass

- Relevant Equations
- ω = 2π / T

I can calculate the angular speed but I don't know how to calculate the radius. Is there certain formula to calculate it?

Thanks

Thanks