Lab6-Mass, Weight, and Density
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Tarrant County College, Fort Worth *
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Course
1415
Subject
Astronomy
Date
Dec 6, 2023
Type
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6
Uploaded by 77mdestiny
Lab 6: Mass, Weight, and Density Name ___
Destiny McDonald
__________________________ Date___
10-3-23________ Lab Partner(s) _____________________________________ Laboratory Report Part A: Density Based on Table 1 (given in the theory) answer the following questions. 1.
Which is the densest element? -
Gold 2.
Which of the elements will float on water and why? -
Liquid Hydrogen because it is the lightest. 3.
If you have a one-meter cube of aluminum, iron, and lead, which of the following is true? a)
All three cubes will have the same density. b)
The aluminum cube will be the densest one. c)
The lead cube will be the densest one. d)
All three cubes will have the same mass. 4.
You have an object of density 1050 kg/m
3
. This object will a)
Float only on pure water b)
Sink in seawater. c)
Float only on seawater. d)
Sink in both pure and seawater. 5.
On heating a sample of gas, its density will a)
increase. b)
decrease. c)
remain the same. d)
None of the above. Part B: Your Weight on Other Planets In this lab exercise you will calculate your weight on other planets in our Solar System. You will either gain or lose weight because the gravitational force of each planet is different. How about your mass? Procedure 1.
Write down your weight W
on the Earth __________ lbs. 2.
Fill the relevant mass, M
(in kg), and radius, R
(half of the diameter) (in km), of each of the planets from Table 2 (given in the theory) in column 2 and column 3, respectively, of the chart below. For the dwarf planet Pluto these values are already filled in.
3.
Determine the gravitational acceleration, g
, on each planet in column 4 using the formula:
g
plsnet
= GM/R
2
, where capital G = 6.674 × 10
-11
N · m
2
/kg
2
is the Universal Gravitational constant. Show all your work. 4.
In column 5, calculate the ratio of the planet's gravity (g
planet
) to Earth's gravity (g
earth
). Notice the value of g
carth
, you will also get from column 4. Show all your work.
Lab 6: Mass, Weight, and Density 5.
Calculate your weight on other planets by multiplying your weight on Earth by the corresponding g-ratio and write your weight under the picture of each planet. Show all your work.
Lab 6: Mass, Weight, and Density Planet M (Planet’s mass, kg) R = Diameter/2 (Planet's radius, km) g
planet (g
plsnet
= GM/R
2
) (m/s
2
) g-ratio (g
planet
/g
earth
) Mercury 3.302 x 10^23 2439.5 3.700x 10^6 N/kg 98795.9184 Venus 4.869 x 10^24 6052 8.86x 10^4n/kg 9040.816327 Earth 5.974 x 10^24 6378 9.79x10^5 n/kg 99897.95918 Mars 6.419 x 10^23 3397 3.71x 10^4 n/kg 3785.714286 Jupiter 1.899 x 10^27 71492 2.466x10^7 N/kg 2516326.531 Saturn 5.685x 10^26 60268 1.04 x 10^5 n/kg 10612.2449 Uranus 8.685 x 10^25 25559 8.86x 10^6 n/kg 904081.6327 Neptune 1.024 x 10^26 24764 1.11x10^7 n/kg 1132653.061 Pluto 1.27 × 10
22 1137 6.55x 10^5 n/kg 66836.73469 Show all your calculations.
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Lab 6: Mass, Weight, and Density lbs: 60.5 ________lbs: 145.1 ________lbs: 160 60.3________lbs __404.5______lbs __170.2______lbs _142.2_______lbs ___180_____lbs _____10.7___lbs
Lab 6: Mass, Weight, and Density Questions
Explain
your answers for each question. (In the following, Pluto is assumed to be a planet). 1.
On which planet will you weigh the least? I will weigh the least on Pluto. 2.
On which planet will you weigh the most? I will weigh the most on Jupiter. 3.
On which two planets will your weight be approximately the same? Do these two planets have the same size (check their radius)? My weight would be approximately the same on Mars and Mercury. 4.
On which planet will you weigh about half of your weight on the Earth? Mercury. 5.
Which is heavier: a pound of feather or a pound of lead? They weigh the same. 6.
Which weighs more: a thousand pennies on Earth or a thousand pennies on the Moon? They would weigh the same because it would still have the same mass. 7.
If your dog of 20 kg mass gets a chance to visit the Moon, your dog's mass on the Moon would be _________ The dog’s
mass will remain the same on the Earth and the Moon. 8.
The gravity on the Moon is 1/6 of that on Earth. If your weight on Earth is 130 lbs, what will be your weight on the Moon? You would be 21.67 pounds because you would divide 130 by 6 and get your answer
. 9.
The gravity on the Sun is about 27 times that on Earth. How much will your friend of 162 lbs weigh on the Sun? My friend would weigh 4374 pounds. You would multiply 162 times 27. 10.
When you are on a weight loss diet, do you lose weight or mass, or both? You lose both. You tend to lose body fat which would be the mass and then when you eat fewer calories that factors into the weight. 11.
Which of the following will cause the mass of a metal block to increase? a)
Putting the block in the freezer. b)
Measuring the mass of the block on Jupiter. c)
Heating the block. d)
None of the above.
Lab 6: Mass, Weight, and Density CONCLUSION In this lab we calculated the mass, radius, gplanet, and gratio of all the planets in the solar system. I found the mass by using the chart that was on the lab directions. Then for the radius I divided the diameter of each planet by 2. Then for the gplanet we use the formula gmplanet/ r^2 planet. GM planet is 6.67x 11^-11nxm/kg^2 and you divide it by the radius of each planet. Then once you get the gplanets of each planet you are ready for the g ratio. To solve for g ratio you divide g planet by g earth which is 9.8 to get your answers. At the end of the lab, we use your weight and see how much we weigh on each planet. To find it you use your weight and multiply it by gratio.
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