1. The contraption below has a face cam with an elliptic pro?le pushing a push rod against a spring. The face cam is spinning at a slow Ω = 60 rpm. The mass, m, of the system is 40 kg. The upper spring has constant, k1 = 6000 N/m, while the lower spring has constant, k2 = 3000 N/m. The damper has a coef?cient of 240 N-s/m. The equation of motion is given by
![833_Overlay the frequency spectrum of the excitation.png](https://mywordsolution.com/CMSImages/833_Overlay%20the%20frequency%20spectrum%20of%20the%20excitation.png)
1.a. Sketch (with scaled axes) the frequency response of the system. Overlay the frequency spectrum of the excitation.
1.b. As you start the system up, increasing Ω from 0 to 60 rpm, what speeds are most likely to excite large amplitude response? Why?
1.c. Plot the steady state motion of the block caused by the excitation over one period.
1.d. Estimate (using a plot) the maximum force transmitted to the ?oor.
![598_Overlay the frequency spectrum of the excitation1.png](https://mywordsolution.com/CMSImages/598_Overlay the frequency spectrum of the excitation1.png)