Force+Lab

=Force Lab (sometimes called the hanging sign lab)- =

Objective: Find the force necessary to keep the bar at equilibrium. Then calculate the weight of the objects on the bar using the formula: f=mg.

Simulation:
media type="custom" key="17203454"

Data Collection Techniques/ Strategies:
1. Open the widget and proceed to the balancing lab tab. 2. Check mark to use the ruler feature. 3. Put an object on one side of the balance and record the distance. 4. Put objects on the other side to create equilibrium (use more than one object). Write their distances down. 5. When you feel your objects will balance out, click the correct button to remove the supports. 6. Calculate the weight of each object on the ruler (f=mg). 7. Repeat steps 3-5, using three different objects. (For example: bricks, then people 1, then mystery objects 1) 8. Feel free to play the game.

Analysis Questions:

1. What did you notice about the smaller objects? 2. What would change if the center wasn't at zero? 3. Find the mystery box that balances out box C at 1 m on the left side and H and D on the right side at 1 and 1.5 m respectively. Find all the combinations that work.

<span style="color: #ffa000; font-family: 'Courier New',Courier,monospace;">Graphical Analysis:

<span style="color: #0053ff; font-family: Tahoma,Geneva,sans-serif;">No graph is needed because the data doesn't have any graphical representation from a formula.

<span style="color: #800080; font-family: 'Courier New',Courier,monospace;">Percent Difference/Error:

<span style="color: #008080; font-family: Tahoma,Geneva,sans-serif;">There should be no percent difference/error because the balance is centered and there is no known standard to compare it to.

Video Sample Lab http://screencast.com/t/PnrMksYkLGAf

Sample Document Lab