SHM problem

  • Thread starter Mayerzee
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  • #1
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I have no idea why I can not get this question, but here it is:

A brick is resting atop a piston that is moving vertically with simple harmonic motion of period 1.19 s. At what amplitude will the brick separate from the piston?

I know that once the acceleration is greater than that of gravity the 2 will seperate.

I tried using the equation:
a(t)=-w^2Acos(wt+phi) a=-9.8 w=2pi/T phi=pi and t=T

Where am I wrong on this question?
Any help would be greatly appreciated! Thanks
Peter
 

Answers and Replies

  • #2
Doc Al
Mentor
45,011
1,288
You are on the right track. What's the equation for y(t)?
 

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