=+– to compute the response amplitude of the system when a harmonic torque is generated with a forcing frequency equal to ω1∕2 by applying unit loads parallel to the beam on masses M.

b.

2EI, m EI M

M a.

2EI, m M

EI

 /2

  

/2

 /2

 /2

 



c.

EI, m k

d.

L EI, m EA, m