# Work done by driver plate

1. Dec 10, 2011

### onandon

Show that the work done by the driver plate during a stress accumulation phase is W=$\frac{2m2g2fd}{k}$(fs-fd

I'm not sure where to start with this. I am given several equations but can't reach the desired equation.
Fn=ρghA
m=ρA3/2
θ=$\frac{fs}{fd}$
X=$\frac{xG}{2fsρghA1/2}$
U=$\frac{u}{fsgh}$($\frac{G}{2ρ}$)1/2

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution