The students should recognize on a simple block and tackle that
the force required to lift a specific load can be reduced by half
compared with the weight (force) by using an arrangement of 2
pulleys. However, a longer distance must be covered. By comparing
the products load × load distance and force × force
distance they should recognize that both are equal large.
The term "(slotted) weight" is incorrect inasmuch as we are
dealing with a mass which becomes a weight (in reality "a
weight-force") under the influence of the earth's gravity. The term
"mass piece" used here is better.
- Real stand material for an esecially stable and safe setup
- Student-suitable experiment descriptions with reports available