physics

Two 0.55 kg basketballs, each with a radius of 15 cm, are just touching. Ignore any other gravitational interactions.
(a) How much energy is required to change the separation between the centers of the basketballs to 1.0 m?
(b) How much energy is required to change the separation between the centers of the basketballs to 10 m?
Our teacher has not even talked about this and the chapter that we are working on deals with gravitational force and G. Can anyone tell me an equation to use or a theory? thank you


The gravitation energy will be
assuming you know calculus...

INT force*distance
INT GMM/x^2 dx = GMM/x eval at changes.

Energy= G(.55)^2 ( 1/.15 - 1/d) where d is the new separation.

If you don't understand the calculus involved, just use the result.

I used (2/3)x10^-10 for G and got1.14e-10. This assignment is on-line, so I get instant feed back and this answer was incorrect.

  1. 👍 0
  2. 👎 0
  3. 👁 165
  1. Chairs in an orbiting spacecraft are weightless. I you were on board and you were barefoot, would you stub your toe if you kicked a chair?

    1. 👍 0
    2. 👎 0
    posted by Rene
  2. Yes

    1. 👍 0
    2. 👎 0
    posted by drwls

Respond to this Question

First Name

Your Response

Similar Questions

  1. PHYICS

    Two 0.64 kg basketballs, each with a radius of 13 cm, are just touching. Ignore any other gravitational interactions. (a) How much energy is required to change the separation between the centers of the basketballs to 1.0 m? in J

    asked by Steve on March 17, 2011
  2. physics

    Two 0.61 kg basketballs, each with a radius of 13 cm, are just touching. How much energy is required to change the separation between the centers of the basketballs to the following (a)1 meter (b) 10 meters

    asked by chris neives on November 25, 2012
  3. Physics

    Two 0.53-g basketballs, each with a radius of 17 cm, are just touching. How much energy is required to change the separation between the centers of the basketballs to 1.1 m? (Ignore any other gravitational interactions.) How much

    asked by Cooper on November 9, 2011
  4. Fractions

    Last week, a sporting goods store had a big sale. During the sale, shoppers bought 1/15 of the store's basketballs. After the sale, there were 308 basketballs left. How many basketballs were there originally? Can someone please

    asked by Quinten on November 23, 2014
  5. social studies

    A company in China manufactures basketballs. A company in the United States buys the basketballs and resells them to people there. What term best describes the U.S. company? A importer B exporter C producer D consumer (?)

    asked by nina on August 19, 2015
  6. math

    If jeff bought 2 basketballs and 3 baseballs for $10 and herman bought 3 basketballs and 4 baseballs for $15, how much is a basketball. Show all work.

    asked by laur on June 12, 2013
  7. MATH- URGENT!

    the athletic department ordered a total of 29 basketballs and footballs for $1000. if the basketballs cost $30 each and the footballs cost $40 each, how many footballs were purchased?

    asked by candie on July 21, 2015
  8. math

    the athletic department ordered a total of 29 basketballs and footballs for $1000. if the basketballs cost $30 each and the footballs cost $40 each, how many footballs were purchased?

    asked by candie on July 21, 2015
  9. algebra 1 a

    A high school basketball team has a budget specifically for towels and extra basketballs. A towel costs $4 and a basketball costs $22. Assume the budget is $350 and that 30 towels are needed for the team for the entire season. Use

    asked by keren on May 26, 2015
  10. Math

    A hemisphere of radius 7 sits on a horizontal plane. A cylinder stands with its axis vertical, the center of its base at the center of the sphere, and its top circular rim touching the hemisphere. Find the radius and height of the

    asked by John on March 22, 2012

More Similar Questions