Search Colleges, Courses, Exams, Questions and Articles

Ask a query on 8879100846 Ask Login | Sign Up

 

 

› Ask & Answer › Question

Two stars of masses m and 2m at a distance d rotate about their common  centre of mass in free space. The

Option 1 -

2 π 3 G m d 3

Option 2 -

1 2 π 3 G m d 3

Option 3 -

2 π d 3 3 G m

Option 4 -

1 2 π d 3 3 G m

0 4 Views | Posted a month ago
Asked by Shiksha User

  • 1 Answer

  • A

    Answered by

    alok kumar singh | Contributor-Level 10

    a month ago
    Correct Option - 3


    Detailed Solution:

    m ω 2 . 2 d 3 = G . m . 2 m d 2 ⇒ ω = 3 G m d 3  

    T = 2 π ω = 2 π d 3 3 G m

     

                 

Similar Questions for you

A wire can be broken by a load of 20 kg-wt. The force required to break wire of same material with twice the diameter will be
A
alok kumar singh

Kindly go thrugh the solution

 

The radii of circular orbits of two satellites A and B of the earth, are 4R and R, respectively. If speed of satellite A is 2V, then the speed of satellite B will be
A
alok kumar singh

Kindly consider the following

 

At a point away from planet of radius 6400 km, the gravitational potential and field are –6.4 × 107 SI units and 6.4 SI units respectively. Find height of that point above surface of planet.
A
alok kumar singh

G M r = 6 . 4 * 1 0 7                       . (i)

G M r 2 = 6 . 4                   . (ii)

r = 6 . 4 * 1 0 7 6 . 4  

= 107 m

= 10,000 km

R + h = 10,000

h = 10,000 – 6400 = 3600 km

Mass of moon is 1 8 1  times the mass of a planet and radius is 1 9  times the radius of the planet. The ratio of escape speed from planet to escape speed from moon is ________.
A
alok kumar singh

-> V e s c = 2   G M R

R a t i o = 8 1 9 = 3

If the gravitational acceleration at the surface of earth is g, then increase in potential energy in lifting an object of mass m from earth surface to a height equal to half of radius of earth from surface will be:
A
alok kumar singh

Kindly go through the solution

 

Get authentic answers from experts, students and alumni that you won't find anywhere else

Sign Up on Shiksha

On Shiksha, get access to

  • 65k Colleges
  • 1.2k Exams
  • 688k Reviews
  • 1800k Answers

Learn more about...

Share Your College Life Experience

Write a Review

Didn't find the answer you were looking for?

Search from Shiksha's 1 lakh+ Topics

or

Ask Current Students, Alumni & our Experts

Ask Now
Community GuidelinesUser Points System
QuestionsDiscussionsTags
×

This website uses Cookies and related technologies for the site to function correctly and securely, improve & personalise your browsing experience, analyse traffic, and support our marketing efforts and serve the Core Purpose. By continuing to browse the site, you agree to Privacy Policy and Cookie Policy.

Need guidance on career and education? Ask our experts

Characters 0/140

The Answer must contain atleast 20 characters.

Add more details

Characters 0/300

The Answer must contain atleast 20 characters.

Keep it short & simple. Type complete word. Avoid abusive language. Next

Your Question

Edit

Add relevant tags to get quick responses. Cancel Post