# Lab 5.docx - Lab#5 Work and Energy Data Table#1 Raw...

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Lab #5: Work and Energy Data Table #1: Raw Measurements Incline Angle (º) Force (N) Final Height (m) Initial Height (m) 1 1.35 4.6 0.0495 0.0338 2 2.80 4.9 0.0790 0.0395 3 6.05 5.6 0.1335 0.0500 4 9.00 6.5 0.1870 0.0620 5 12.7 7.3 0.2500 0.0730 6 15.8 8.2 0.3080 0.0900 Data Table #2: Masses Masses (kg) Sled 0.16506 Mass 1 0.50026 Mass 2 0.50030 Mass 3 0.50063 Total 1.6663 Data Table #3: Works and Energies Incline Work (J) Potential Energy (J) %- Loss in Total Work 1 3.7 0.256 6.9 2 3.9 0.645 17 3 4.5 1.36 30. 4 5.2 2.04 39 5 5.8 2.89 50. 6 6.6 3.56 53.9 REFLECTION
1. The instrument uncertainty for recording the height is ½ of the least-count of the meterstick, in this case 0.0005m. Is this a reasonable estimate of the uncertainty in the heights you measured? Why may this be a gross underestimate?
2. Even though we are pulling through the same 80cm, the work done differs as the angle increases. Offer an explanation for the value of the work with increasing angle? (Take a look at