8) a) 5) Friction: Does It Work? {9 pts) (4 pts} In a technology catalog, you see an advertisement from Greenberg Global Tech for a frictionless spring- andmass system. A mass sits on a frictionless surface. The mass is attached to a spring, which in \\ turn is attached to the wall. The advertisement says that if you push the mass from its equilibrium position, it will oscillate, exhibiting simple harmonic motion. Greenberg Global Tech claims that for a displacement amplitude of xm = 84.00 cm, the mass has a maximum acceleration magnitude of am = 140.00 cmlsz. frictionless You are considering purchasing this system. Find its expected angular frequency, w. (5 pts} You purchase the system from Greenberg _ Global Tech. You try it, and you are very NOT disappointed. The surface is NOT frictionless! fric'fanh'\" You start the mass oscillating, but after a short \\ time it comes to rest. You collect some data so that you can write Greenberg Global Tech a detailed complaint. You know that the spring has a spring constant of k = 56.0 %. As a test, you release the mass from rest at a displacement of AXE = 5.00 m from its equilibrium length. It oscillates for only t = 19.5 s before coming to rest at a displacement Axf = 1.40 m from the equilibrium length. Find Wf, the amount of work done on the system by friction during this test