a. The mass of the system of Problem 2.1 is subjected to the time dependent force F(t) 250cos(4t) = dynes, where t is in seconds. Determine the response of the system. Plot the response and identify the amplitude, period and lag time.

b. The mass of a mass-spring system is displaced and released from rest. If the 20 gm mass is observed to return to the release point every 2 seconds, determine, the stiffness of the spring.

Answer rating: 100% (QA)

a Given that m 20 g 20 x 10 3 kg F 250 cosut dynes 250 x 10 5 cosutN ... View the full answer