1 m Q Overhead view of a conventionally rigged boat. The stern is marked Q. 2. The placement of rowers in a boat its "rig" conventionally has the oars arranged alternately to the left and right, which we represent as LRLR (see Figure.). The force generated by an oar being pulled through water can always be resolved into two components: one that pushes the boat forward, T, and another that pushes it to the side, F. (The sideways force reverses direction midway through the stroke.) This causes a conventionally rigged boat to wiggle side to side as it moves through the water, slowing its forward progress. (a) If the rowers sit 1 meter apart in a LRLR placement as shown in Figure 1 and the distance from the stern is 1 meter, show that the instantaneous total moment on the boat about the stern Q is 2F. (Consider the rowers to be identical automatons that move in perfect unison and generate identical forces.) (b) Using the same positions as part (a), find a L-R pattern of four rowers in a boat that yields zero moment about Q. (c) Find a L-R pattern of rowers in an eight-person boat that yields zero moment about the stern Q. FG = mcacio at Id (PG/0) dt Id MG dt 1 To dt I ma||vc|o||²+ha we 2 (ha)=(ha) +xha M 6N-K (3D rigid body) FhGle ThG = Gle [w] (3D) (2D)