Dynamics of Machines - Forced Vibration

[Athi Sankar]

Summary: I need a help to solve problem asked in university exam

I am looking for the answer for the above question. I solved almost except the last one "Force exerted by the spring and dashpot on the motor".
Can anyone help me to find out the answer for it

 

[berkeman]

Can you please show us the work you've done on this question so far? Then we should be able to help you finish it off. Thanks.

 

[Athi Sankar]

I have attached the image file. i am looking for the answer for last question.
do i share the theory behind this to get better visibility of equations