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GRAPHS

As we can see in the graph shown above, we can say that whenever we increase the force, the lever

arm decreases. It is because the force is indirectly proportional to the lever arm. The higher the

force, the shorter the lever arm to maintain its equilibrium. This graph is for table 1.

For table 2, I compared the actual value and the computed value. The actual value is 240 N and thecomputed value is 250.97. Its percent difference is only 4.47%

For the last part of the experiment, which is determining the weight of the beam, the data comparisonshown above has a percent difference of 4.95%.

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CONCLUSIONS

If the net torque of the system is equal to zero, we can say that the system obeys the second

condition of equilibrium. In determining the torque of the system, we must choose a point whereinthe torque will be calculated. In this experiment, the fulcrum of the beam is the chosen point. We

used this point as a reference point in measuring the lever arm of the system so that we will be able

to compute for the missing variables.

This experiment concludes the second condition of equilibrium. We analyzed the system carefully

and it shows us how is the second condition of equilibrium is applied. We can know that the second

condition of equilibrium is applied if the beam is not rotating, hence it is in equilibrium. Afterdoing this experiment, I conclude that the forces that acts along the system affects its torque. On

the first part of the experiment, I observed that whenever we increase the force, the lever arm

decreases. On trial 1, we added 10 grams of weights to the pan. After that, we balanced the beam

by moving the pan onto its lever arm. Therefore, the larger the lever arm the lesser the force added,and the shorter the lever arm the greater the force.

The percent difference among the values range from 0-6% which is precise and accurate. Becauseof this, all of the data given was reliable and I can say that we did the experiment correctly. We

have also proved the objectives of this experiment. The results of our experiment justifies the actual

value of the data given.

By presenting all of the data above, I conclude that all of the objectives of this experiment are met.

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Pictures

Figure 1. Performing Trial 1.

Figure 2. Writing down all the data gathered.

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Figure 3. Second part of the experiment.

Figure 4. Measuring the angle.

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Figure 5. Few more trials.

Figure 6. Measuring the lever arm.

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Figure 7. Weighing the beam.

Figure 8. Apparatuses used.