Final answer:
The question relates to physics, focusing on static equilibrium and the distribution of forces on bridge piers due to the weight of a car. As the car moves across the bridge, the load distribution changes accordingly. Additional contexts suggest topics in fluid dynamics and energy conversion, also within the field of physics.
Step-by-step explanation:
The question provided appears to be incomplete and does not contain enough information to answer it directly. However, if we consider the context given in the following questions, it seems the overall topic is related to the physics of structures and forces, specifically dealing with bridges and how forces are distributed when a vehicle is on it. In question 'a', a 1000 kg car is resting 5 meters from the left pier of a bridge, and we must determine the force exerted on the left and right piers. We would use principles of static equilibrium to calculate the forces FL and FR. As the car moves toward the right side of the bridge, FR would increase, and FL would decrease. However, the total force should remain equal to the weight of the car unless additional forces come into play.
Another context provided in the references pertains to the flow rate and efficiency of a dam which also falls under the subject of physics, specifically fluid dynamics and energy conversion.