Read the following case and answer the following questions:
A group of students conducted an activity in the school laboratory to compare the performance of three simple machines. Each machine was used to lift a heavy load by applying a smaller effort. The students recorded the load lifted by each machine and the effort required to lift it.
| Machine | Load (\(N\)) | Effort (\(N\)) |
| \(A\) |
\(400\)
|
\(100\) |
| \(B\) | \(450\) | \(150\) |
| \(C\) | \(300\) | \(75\) |
1. What is the Mechanical Advantage of Machine \(C\)?
2. If the effort required by Machine \(A\) increases from \(100\ N\) to \(200\ N\) while lifting the same \(400\ N\) load, what will be its new Mechanical Advantage?
3. Arrange the three machines in decreasing order of Mechanical Advantage.