I) Based on your understanding of vibrations, explain the effect of introducing damping into the system and the effect of damping on the frequency of the system and on its amplitude. [4 marks] II) In a factory, an engineer discovered that an undamped system vibrates with a frequency of 10 Hz and amplitude 1 mm. Calculate the maximum amplitude of the system's velocity and acceleration. [4 marks] III) A boiler furnace's vertical walls has a dimension of 6m x 4m x 4m high. The walls are constructed from an inner fire brick wall 3.4 cm thick with thermal conductivity of 0.6 W/mK, a layer of ceramic blanket insulation with thermal conductivity 0.3 W/mK and 10 cm thick, and a steel protective layer of thermal conductivity 65 W/mK and 4 mm thick. The inside temperature of the fire bricklayer was measured at 800C and the temperature of the outside of the insulation was 70 C. Calculate the heat loss rate through the boiler furnace's vertical walls. Also, find the interface temperature of layers. Discuss how heat loss can be reduced in the system. [12 marks]