Lesson 1.2: The Simplest Machine
Lesson 1.2: The Simplest Machine
A flat piece of material such as wood can be made into the simplest machine. How is that possible? The simplest machine is an inclined plane.Â
Suppose you need to lift a heavy box from the floor to the top of a table. You might put one end of the flat piece of material on the floor and the other end on the edge of the table. You now have an inclined plane that will make moving the box from the floor to the table easier because you can slide the box up the inclined plane instead of lifting it.
Read the Find Out Activity on page 131 in your textbook. A student performed the activity and recorded the data into the table below. Copy this data into the table in Assignment 7 and use it to answer the assignment questions 1 to 4.Â
|
Situation |
Height (cm) |
Force (N) |
Distance Travelled (cm) |
|
Lift the block straight up onto the three books |
20 | 6 | 20 |
|
Pull the block up the inclined plane onto the three books |
20 | 3 | 40 |
|
Lift the block straight up onto the six books |
40 | 6 | 40 |
|
Pull the block up the inclined plane onto the six books |
40 | 4 | 60 |
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