- #1

- 699

- 5

## Homework Statement

##M\ddot{y} + k_{eq}y = me\omega^2\sin(\omega t)##

What is ##m##?

## Homework Equations

## The Attempt at a Solution

In the ODE above, ##M## is the total mass of the problem, correct? For instance, if we had a cantilever beam, ##M = m_b + m_m(0.23)## where ##m_b## is the mass of the beam and ##m_m## is the mass of the motor.

Is ##m## the mass of the motor causing the unbalance or is it the mass of the whole system as well?