Linear motion, | Physics homework help

1. The mass of the Earth is 5.98 ✕ 1024 kg, and the mass of the Moon is 7.36 ✕ 1022 kg. The distance of separation, measured

between their centers, is 3.84 ✕ 108 m. Locate the center of mass of the Earth-Moon system as measured from the center

of the Earth.

2. Explorers in the jungle find an ancient monument in the shape of a large isosceles triangle as shown in the figure below.

The monument is made from tens of thousands of small stone blocks of density 3 752 kg/m3. The monument is 14.6 m

high and 61.9 m wide at its base and is everywhere 3.90 m thick from front to back. Before the monument was built many

years ago, all the stone blocks lay on the ground. How much work did laborers do on the blocks to put them in position

while building the entire monument? Note: The gravitational potential energy of an object-Earth system is given by Ug =

MgyCM, where M is the total mass of the object and yCM is the elevation of its center of mass above the chosen reference

level.

3. A uniform piece of sheet metal is shaped as shown in the figure below. Compute the x and y coordinates of the center of

mass of the piece.

x = 11.7 cm

y = 13.3 cm

https://www.coursehero.com/file/25746861/Assgnmnt7-xid-5966075-2pdf/

This

4. A rod of length 20.50 cm has linear density (mass per length) given by

where x is the distance from one end, and λ is measured in grams/meter.

5. A water molecule consists of an oxygen atom with two hydrogen atoms bound to it (figure). The angle between the two

bonds is 106°. If the bonds are long, where is the center of mass of the molecule? (Use a coordinate

system centered in the oxygen atom, with the x axis to the right and the y axis upward.)

6. Consider the following distribution of objects: a 4.00-kg object with its center of gravity at (0, 0) m, a 5.20-kg object at

(0, 3.00) m, and a 4.40-kg object at (4.00, 0) m. Where should a fourth object of mass 7.00 kg be placed so that the

center of gravity of the four-object arrangement will be at (0, 0)?

7. A circular pizza of radius R has a circular piece of radius R/2 removed from one side as shown in the figure below. The

center of gravity has moved from C to C’ along the x axis. Show that the distance from C to C’ is R/6. Assume the

thickness and density of the pizza are uniform throughout.







Calculate Your Essay Price
(550 words)

Approximate price: $22

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
$26
The price is based on these factors:
Academic level
Number of pages
Urgency
Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more

Order your essay today and save 10% with the coupon code: best10