Which of the two systems in figure 4 will need the largest motor and why

To determine which of the two systems in Figure 4 will require the largest motor, we need to consider the factors that affect the motor size.

1. Load Torque: The first factor is the torque required to move the load. Torque is the rotational force required to overcome the friction and resistance of the system. The system that requires a larger load torque will need a larger motor.

2. Inertia: Another factor is the inertia of the load. Inertia is the resistance of an object to changes in its rotational motion. A system with a larger inertia will require a larger motor to overcome the inertia and initiate the motion.

3. Speed: The speed at which the load needs to move also affects the motor size. Higher speeds require more power, which in turn may necessitate a larger motor.

Once we know the above factors, we can compare the two systems in Figure 4 to determine which one needs the largest motor.

To obtain this information, you will need to analyze the specifications of the two systems. This may involve examining the schematics or diagrams provided in Figure 4, studying any given values or measurements, or consulting accompanying texts or documentation.

If the specifications are not available, you might need to make certain assumptions or estimations based on the visual information provided in the figure. However, without more specific details about the systems in question, it is difficult to provide a definitive answer.