(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Block “A” is released with initial velocity v=10 m/s. Find the period and the amplitude

of oscillations after inelastic collision of block “A” with block “B”. The mass of block “A” is

2 kg, the mass of block “B” is 2 kg. The spring constants of the springs are 100 N/m and 300

N/m. The surface is frictionless and the springs are massless.

2. Relevant equations

[tex]E_i = \frac {1}{2} m_A v^2[/tex]

[tex]E_f = \frac {1}{2} k A^2 + \frac {1}{2} (m_A + m_B) v^2[/tex]

3. The attempt at a solution

I attached the image of the problem at the bottom.

Trying to find the amplitude of oscillations... I tried [tex]E_i = E_f[/tex].

[tex] \frac {1}{2} m_A v^2 = \frac {1}{2} k A^2 + \frac {1}{2} (m_A + m_B) v^2[/tex]

[tex] 200 = 400A^2 + 400[/tex]

Got stuck here, because when I subtract 400 I get -200 on the left side and I can't take the square root... am I setting this up right?

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# Homework Help: Period and amplitude of oscillations.

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