• 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

# Related International Baccalaureate Physics essays

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

Therefore, the equation that includes x to the power of -0.5 is within our uncertainty. Furthermore, when the inverse of the square root of mass was then taken, the graph became very close to linear. The positive slope of this linear line, 3.3568, shows that as the inverse of the

2. ## The Affect of Mass on the Period

no correlation between mass and period, and that the two variables are independent of each other. We believe that the mass of a pendulum does not affect its period for two reasons. The first is that we believe our data is fairly reliable because all of our trials for each data point had had very similar results.

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. ## Pendulum Lab

Mass- The mass can affect the velocity of the bob, using an electronic scale the mass of the chocolate was kept as close as possible. Room temperature- The room temperature can affect the density of air increasing or decreasing the resistance encountered by the bob, this variable was monitored as

2. ## Design Lab, Charge on Balloons

As the volume of the balloon will be varied, the charge will vary accordingly, hence being the dependant variable. Some variables in this experiment have to be controlled in order to get 'perfect' results, such variables are: The electroscope: Different electroscopes have different structures, which might affect the measurement of charge in this experiment.

1. ## HL Physics Revision Notes

Electrons occupy discrete energy levels. Movement between levels involves absorbing or emitting energy. When an electron moves from a higher energy level to a lower energy level, it emits energy in the form of light (photons). Explain the origin of atomic energy levels in terms of the ?electron in a box? model.

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 