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Four particles at the corners of a square with a side length L = 2m are connected by massless rods (See below) The particle masses are\( m_1 = m_4 = 3\) kg and \( m_2 = m_3 = 4\) kg. Find the moment of inertia of the system about the z axis.
 one year ago
 one year ago
Four particles at the corners of a square with a side length L = 2m are connected by massless rods (See below) The particle masses are\( m_1 = m_4 = 3\) kg and \( m_2 = m_3 = 4\) kg. Find the moment of inertia of the system about the z axis.
 one year ago
 one year ago

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geerky42Best ResponseYou've already chosen the best response.1
dw:1359596705890:dw
 one year ago

Yahoo!Best ResponseYou've already chosen the best response.0
\[I = \sum_{i=1}^{n}mi.(ri)^2\]
 one year ago

Yahoo!Best ResponseYou've already chosen the best response.0
The trick here is to Choose Orgin..Make Mass ( M3) as Orgin.
 one year ago

Yahoo!Best ResponseYou've already chosen the best response.0
Wait..... I about Z I(z) = I (x) + I (y)
 one year ago

geerky42Best ResponseYou've already chosen the best response.1
and r for m1 and m4 is L? L√2 for m2, right?
 one year ago

geerky42Best ResponseYou've already chosen the best response.1
Hmm, I tried this way and i was wrong, guess i should tr again... the key answer is 56 kg*m², by the way.
 one year ago
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