my+lever+experiment

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 * // My Lever Experiment //**

LEVER LAB:- Question: When the effort force come closer to the fulcrum will the effort force increase or decrease?

Hypothesis: if the effort force is closer to fulcrum it will take more force to lift the weight.

Variables: Controlled variable: location of the load Independent variable: amount of effort force Dependent variable: amount of force load and mass

Material: a 200g weight a meter stick pencil (as fulcrum) a Newton meter

Procedure: 1) the larger end of the meter stick will be load force at 100cm 2) the smaller end of the end will be 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 see-saw, balanced in the middle. 4) Record the newtons you need to lift the load. (I've done this one as an example below). 5) compare it with the other classes and check weather the hypothesis are same or not.

Fulcrum At (cm) || Load at End of Ruler (g) || Load distance (cm) (from fulcrum to load) || Effort Force needed (newtons) || Effort Force Distance (cm) || 30 || 0 || 49 || || || 30 || 0 || 49 || ||  || 30 || 0 || 49 || || || 30 || 0 || 49 || ||   ||

conclusion:-

suggestion for improvement:-