Question 8.3: A communications van has an antenna system modeled in Fig. 8...
A communications van has an antenna system modeled in Fig. 8.4 as two coils of equal mass m that move radially along a rigid control shaft that rotates with angular speed ω about the vertical antenna axis. At an instant of interest, each coil is at a distance d from the center C and is moving with center directed variable speed v relative to the shaft frame \varphi=\left\{C ; \mathbf{i}_k\right\}. The van moves with speed v_o in the ground frame \Phi=\left\{F ; \mathbf{I}_k\right\}. (i) What is the total momentum of the system? (ii) What is the moment of momentum of the system relative to the center of mass? (iii) Apply (8.19) to determine the moment of momentum about the center of mass . Ignore the mass of the shaft and model the coils as particles.
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