(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A 5 kg sphere is connected to a thin

massless, but rigid rod of length L = 1.3 m to

form a simple pendulum. The rod is connected

to a nearby vertical wall by a spring with spring

constant k = 75 N/m, connected to it at a

distance h = 1.1 m below its point of

suspension. What is the angular frequency (in

rad/s) of the system for small amplitude

oscillations?

2. Relevant equations

3. The attempt at a solution

So I was listening to my teacher start to solve this problem. He starting talking about summing the torques between these two. I have the equation he wrote down from it, but I am not too sure what to do with it... ([tex]\tau[/tex])net = -Lmgsin[tex]\theta[/tex] - hk[tex]\Delta[/tex]xsin[tex]\beta[/tex] = m(l^2)[tex]\alpha[/tex]

Note: alpha is not a power...

I know that the small angle theorum makes sin go away. But how is beta and alpha related? And what about delta x? I don't know I've been working on it for a while and now I'm tired. Thanks for helping!

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Pendulum and spring oscillation

**Physics Forums | Science Articles, Homework Help, Discussion**