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Old Dec 4th 2016, 12:27 PM   #1
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Momentum problem

I tried to solve it from a few approaches: kinematics,energy conservation.
but I know few things for sure. first you need to calculate the velocity
in h.0 by using kinematics equations or energy conservation. then momentum conservation for the velocity of two of them and then kinematic equations or energy conservation for finding h.f.
please help me I'm stuck .
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Old Dec 4th 2016, 01:39 PM   #2
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at height $h_0$, the acrobat will have a velocity of $v_1 = \sqrt{v_0^2 - 2gh_0}$

conserving momentum, the velocity, $v_2$, of the duo after the grab ...

$v_2 = \dfrac{m_A}{m_A+m_B} \cdot v_1$

at the maximum height, $h_f$, the duo's velocity is zero ...

$0 = v_2^2 - 2g(h_f-h_0)$

solve for $h_f$
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