Ch 5 HW: Problem 5.4 - Gravity and Circular Orbits The mass of the Sun is 1.99 x 1030 kg. The mass of Earth is 5.98 x 1024 kg. The distance between
View the step-by-step solution to:

Question

Screen Shot 2019-10-01 at 8.06.57 PM.png

I also don't know how

to start this one?

Screen Shot 2019-10-01 at 8.06.57 PM.png

Ch 5 HW: Problem 5.4 - Gravity and Circular Orbits
The mass of the Sun is 1.99 x 1030 kg.
The mass of Earth is 5.98 x 1024 kg.
The distance between their centers is 1.50 x 1011 meters.
The radius of Earth is 6380 km.
a) What is the Earth's orbital velocity around the Sun, in miles/hour? Answer with 2 SF.
b) At what distance from Earth can an object be placed so that the net gravitational force
exerted by Earth and the Sun on that object is zero? Answer as a multiple of Earth's radius.

Top Answer

View the full answer
IMG_2610.jpg

( a ) Let Earth's orbital shape be circular:
F
. = GMm
= my 2
GM m = rmv 2
GM
= V
(6.67 x 10" m kg 5 )(1. 99x 1030
kg)
(1.5 x 10" m )
V
V = 29747.04 m/s
To mph ...
29747.04 m
3600s
1...

Sign up to view the full answer

Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

-

Educational Resources
  • -

    Study Documents

    Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

    Browse Documents
  • -

    Question & Answers

    Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!

    Ask a Question