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4:42 How it is (-k)*(-k) ??The natural frequency is det(M-{w^2}K) then it should be -1*(-1)
the formula is det(K - Mw^2).
Where did you get the EOM in that form at 1:15?
try to solve the FBD of all the masses which will give you EOM for each mass in the form of mx.. + kx= 0. this can be written in the form of the above matrix.
4:42 How it is (-k)*(-k) ??
The natural frequency is det(M-{w^2}K) then it should be -1*(-1)
the formula is det(K - Mw^2).
Where did you get the EOM in that form at 1:15?
try to solve the FBD of all the masses which will give you EOM for each mass in the form of mx.. + kx= 0. this can be written in the form of the above matrix.