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## Homework Statement

a load of mass m falls a height h onto a pan hung from a spring. if the spring constant is k and the pan is massless and m does not bounce, the amplitude of oscillation is

## Homework Equations

F = - kx

U = 1/2kx^2

## The Attempt at a Solution

mgh = 1/2kx^2, x = sqrt(2mgh/k).this is total extension. Now mg/k will give us the mean position

sqrt(2mgh/k) - mg/k should be the amplitude? Well

its wrong though :|