Thames & Kosmos Simple Machines handleiding
Handleiding
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WHAT’S HAPPENING
The ramp reduces the effort force required to
lift the load.
The weight is distributed across the inclined
plane. A portion of the weight acts to make the
block of stone slide down the ramp, but a
portion of it also presses it against the ramp.
By seing a more or less equal opposing force
against the portion of the force that would
make the stone slide down the ramp, you can
stop the stone or even pull it up. The steeper
the ramp, the greater this portion of force.
With a vertical “ramp,” it is equal to the
original weight of the block of stone.
Here, too, the distance covered on the ramp is
longer than the actual difference in height,
so it saves force. Remember:
work [j] = force [N] • distance [m]
With the model and the force meter from the
first section, you can investigate this a lile
more closely.
Weight
Opposing force
Weight
Opposing force
9
As in Experiment 1, fill the bottle with
water so the bottle and basket (the load)
weigh 1 newton.
10
Hook the spring scale to the load and
drag the load up the ramp with the spring
scale, watching the scale as you do this.
How does the ramp affect the amount of
force needed to lift the load?
11
Fill the bottle with denser materials like
sand, pebbles, or metal hardware and
try lifting different weights on the ramp.
What do you notice?
12
EXPERIMENT 9
Done!
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Productinformatie
| Merk | Thames & Kosmos |
| Model | Simple Machines |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 14232 MB |
