Maximum possible amplitude of oscillation

[rlukis]

Homework Statement

You stick two blocks together with Velcro. The manufacturer rated the Velcro as needing a force of 50N to separate the side you are using when applied to solid surfaces. You set up the connected blocks so that the top one is attached to the end of a vertical spring. The blocks each ahve mass m = 0.75kg, and the spring constant is k = 1200N/m. FInd the maximum possible amplitude of oscillation at which the blocks will hold together.

Homework Equations

not a clue..

The Attempt at a Solution

^^

 

[jimbobian]

The spring is providing a force on the block to keep it oscillating (as it is continually changing speed). You need to find out a which point in the oscillation this force is maximum and then think about what might cause the blocks to separate.