A1 gram mass is connected through a spring of stiffness 4 n/m and a viscous damper that has a damping ratio of 0.6 to a base whose displacement is 3x106 m at a frequency of 150 rad/s. what is the amplitude of the displacement of the mass relative to the base?

Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way