Which of the two systems in figure 4 do you think will need the largest motor explain your answer?
Question: Which of the two systems in figure 4 do you think will need the largest motor explain your answer?
The system in Figure 4b will need the largest motor. This is because the system in Figure 4b has to lift the load against the force of gravity, while the system in Figure 4a only has to move the load horizontally.
In the system in Figure 4a, the motor only has to overcome the frictional forces between the load and the surface. These frictional forces are relatively small, so the motor does not need to be very powerful.
In the system in Figure 4b, the motor has to overcome the force of gravity as well as the frictional forces. The force of gravity is much larger than the frictional forces, so the motor needs to be much more powerful.
Here is a table summarizing the two systems:
| System | Description | Motor requirements |
|---|---|---|
| Figure 4a | The load is moved horizontally. | The motor only has to overcome the frictional forces between the load and the surface. |
| Figure 4b | The load is lifted against the force of gravity. | The motor has to overcome the force of gravity as well as the frictional forces. |
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