- #1

- 169

- 1

## Homework Statement

## Homework Equations

ΣF , ω=√(k/m), f=w/(2pi)

## The Attempt at a Solution

I figured since the only forces acting on the block is the Spring force and a normal force in the downward position. Not a hundred percent sure of this though.

**For Disc:**

ΣFy= Fn - Fg - fs (static) = ma = 0

**For Spring:**

ΣFy= fs-Fs (Spring) - Fn = ma = 0

-> fs-Fs=Fn

**Equating both Spring and Disc:**

fs-Fs-Fg-fs = 0

--> ky = mg

k= mg / y= (.002kg)(9.8m/s^2) / (.08m) = .245 N/m

w= sqrt (k/m) = sqrt ((.245N/m)/(.010 kg+.002kg)) = 4.52 rad/s

f= .719 Hz

Is this correct for part a? Can somebody please assist me, thank you!

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