• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Power Lab - In the power lab, are group thought that Eric would do the most work because he has the most mass and thought that Ashley would do the least work because she had the lowest mass.

Extracts from this document...

Introduction

Ben Fitzgerald 9/21/09 Mr. Thorndike Power Lab Hypothesis: In the power lab, are group thought that Eric would do the most work because he has the most mass and thought that Ashley would do the least work because she had the lowest mass. We guessed that Ashley would generate the most power because she had to work harder than Eric who we thought would produce the least amount of energy. As we added the books to the current mass of our bodies, it required more work. Machines would be more efficient than humans when it comes to using energy. We guessed that we would have to eat a little amount of food to be able to climb the stairs with books, we guessed that Ashley would need one piece of cereal, I would need a piece of bread and Eric would need a granola bar. These estimations were guess to how well we would do in the power lab exercise. Procedure: 1. Obtain four books from Mr. Thorndike 2. Go to the staircase under Mr. Thorndike's room between the 2nd floor and the 1st floor mezzanine 3. ...read more.

Middle

Work without pack = 63.6 kg x 3.34 sec. = 212.424 Newton's x 3.75 meters = 796.59 joules 2. Work with pack = 74.5 kg x 3.44 sec. = 256.28 Newton's x 3.75 meters = 961.05 joules 3. Power generated without pack = 63.6 kg x 9.81 m/g x 3.75 m = 2339.7 joules / 3.34 seconds = 651.7 watts 4. Power generated with pack = 74.5 kg x 9.81 m/g x 3.75 m = 2740.66875 joules / 3.44 seconds = 796.7 watts Group Results: Ashley's Data: 5. Work without pack = 49 kg x 4.04 sec. = 197.96 Newton's x 3.75 meters = 742.35 joules 6. Work with pack = 63.6 x 3.34 sec. = 212.424 Newton's x 3.75 meters = 796.59 joules 7. Power generated without pack = 49 kg x 9.81 m/g x 3.75 m = 1802.6 joules / 4.04 seconds = 446.2 8. Power generated with pack = 63.6 x 9.81 m/g x 3.75 m = 2203.6 joules / 3.34 seconds = 508.9 watts Eric's Data: 9. ...read more.

Conclusion

This makes me think that if you do more work, then you also produce more power. We thought that as we added more books, that it would require us to work harder and use more energy, this is true to the actual because our work and our energy increased when we had books compared to when we did not have books. We said that machines are more efficient at using energy than humans, and that is completely true because our body's can only convert so much food or power into energy, compared to machines. We said that for us to walk up the stairs, I would have to eat a piece of bread, Eric would have to eat a granola bar and Ashley would have to eat a piece of cereal, we were way off, all three of us would need a piece of cereal because me and Ashley used less than a calorie on each trial and Eric used less than 1.5 calories with his trials. Some possible errors with this lab were things like were we all going at the same pace, did we skip steps, or touch every one, these things could in the end effect how much energy and power we produced. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Physics section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related International Baccalaureate Physics essays

  1. The Affect of Mass on the Time It Takes an Object To Fall

    Raw Data Table and Accompanying Graph: Distance: 184cm Time Uncertainty for Each Trial: �0.1s Time (s) Total Mass (g) Uncertainty (�g) Trial 1 Trial 2 Trial 3 Trail 4 Trial 5 Average Avg. Uncertainty (�s) 1.5 0.1 2.15 2.21 2.14 2.15 2.14 2.158 0.152 2.3 0.1 1.67 1.66 1.65 1.63

  2. Stifness of Steel Lab

    There is always a human error, because it is impossible to tell where exactly the oscillation starts, and where exactly it ends. Along with that, the human factor also affects the data, because it is impossible to start a timer at exactly where the oscillation starts, and at exactly where it ends.

  1. Efficiency lab

    Use two meter sticks and tape one end of each together forming a 2m stick 3. Position the two meter sticks perpendicular to the ground and parallel to the wall, station them by taping them onto the wall 4.

  2. Efficiency Lab

    Launch arrow to person on railing, attempting to keep launch as straight as possible and measuring the displacement of the bowstring with another metre stick. 4. Group member at the top of the railing records, based on estimation 5.

  1. Physics Lab

    and g is the acceleration due to gravity that every body on the earth feels. g is taken to be around 10ms-2. For example: 1Kg = 1000g � 100g � 1000g = 0.1Kg 1Kg = 10N � 0.1Kg � 10N = 1N.

  2. Physics Lab

    1000 = 5550 = 144.58 seconds around the planet C = C =5550 C = 34871.678 = 241.19 = p = 2938734.519 M = 1.74 x 10^-4 1.74 x 10^-4 x 10^25 = 1.74 x 10^21 Miranda X = 8.3 Y = 12.3 Radius = = 10.3 10.3 x 1000

  1. HL Physics Revision Notes

    atmosphere, this is why the sky appears blue Harmful UV radiation is absorbed by the ozone layer in the atmosphere which would otherwise be harmful to creatures living on the surface of the Earth Explain the terms monochromatic and coherent.

  2. Gravity lab using mass and force meters

    ±0.1 N 1.0 2.0 3.0 4.0 5.0 6.0 7.0 7.9 8.9 9.9 5.8 *In the mass row, we have 1% uncertainties because the producer company who has built those masses, says that there may be a 1% percent difference in the masses of those objects.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work