Lever+Lab

**__ Hypothesis __** – if the fulcrum and effort force come near to load, then the force will be more because, fulcrum and the effort will be not so close to load, so it will be a bit hard to push down. // 2. // // The larger end of the meter stick (the 100-cm end) will be for the effort force. // // 3. Set up your lever like a meter stick with no weights, and the fulcrum close to the middle so the lever acts like a seesaw, balanced in the middle. // // 4. Put a load of 50 g at the LOAD END of the lever. Put the load as close as possible to the end of the lever. Be careful that the fulcrum stays in place. // // 5. Apply a force by pushing the Force Sensor down on the FORCE END of the lever. Add just enough to lift the load. // // 6. Record the Newton you need to lift the load. (I've done this one as an example below). // // 7. Repeat steps 4- 6 changing the Effort Force Distance. // // 8. Record the data in the data table. // **__ Data Collection and Processing __** // Fulcrum At (cm) // || // Load at End of Ruler (g) // || // Load distance (cm) (from fulcrum to load) // || // Effort Force needed (newtons) // || // Effort Force Distance (cm) // || // 50 // || // 50 // || // 49 // || // 1.0 // || // 49 // || // 50 // || // 50 // || // 49 // || // 1.1 // || // 30 // || // 50 // || // 50 // || // 49 // || // 1.3 // || // 25 // || // 50 // || // 50 // || // 49 // || // 2.0 // || // 10 // || // Fulcrum At (cm) // || // Load at End of Ruler (g) // || // Load distance (cm) (from fulcrum to load) // || // Effort Force needed (Newton) // || // Effort Force Distance (cm) // || // 40 // || // 50 // || // 40 // || // .2 // || // 50 // || // 40 // || // 50 // || // 40 // || // .5 // || // 30 // || // 40 // || // 50 // || // 40 // || // .7 // || // 20 // || // 40 // || // 50 // || // 40 // || // .8 // || // 10 // || // 30 // || // 100 // || // 30 // || // 1.0 // || // 50 // || // 30 // || // 100 // || // 30 // || // .8 // || // 40 // || // 30 // || // 100 // || // 30 // || // .6 // || // 30 // || **__ Conclusion & Evaluation: __** // My hypothesis was right, it was that the force would be more, when fulcrum and effort force come near to load force. It took more force than; it took when fulcrum was near to load but effort to far to load. It took a long time to do this because of the meter. //
 * __ Question __** **– when the fulcrum come near to the load and the effort also come to the, will it need more force to push down**
 * __ Independent Variable __** - // effort force (distance) //
 * __ Dependent Variable __** - // effort force needed (Newton) //
 * __ Controlled Variable __** - // Load at End of Ruler (g), fulcrum //
 * __ Procedure __** – // The smaller end of the meter stick will be for the load force. (The 0cm end). This means that the load you are trying to lift should be at this end. //
 * __ Part I __**
 * __ Part II __**
 * __ Limitations of Experimental Design: __**// in this experiment, we kept changing the position of the effort force. The load and the fulcrum and the load work well. But the meter didn’t worked well, because the Newton were keep changing and it was hard to recognize, what is the Newton //
 * __ Suggestions for Improvement: __**// the improvement will be that I will keep an instant push, so that the meter will be at the same. And don’t give a force from me. //