Posted by JulieAnne on Wednesday, January 5, 2011 at 6:11pm.
Posted by JulieAnne on Wednesday, January 5, 2011 at 5:15pm.
Please check my two answers
I was sitting in a park on a bench next to another person and I moved tow times the original distance between the two of us, the force of gravity between me and the other person would be:
1. onequarter as much
2. onehalf as much
3. twice as much
4. 4 times as much
I think it would be onehalf as much because the force of gravity diminishes the farther you get away from object, correct or no?
2. If Earth's mass was increased by 4 times the amount, remain the same distance from the sun, would the speed of the Earth:
stay the same
increase by factor of 4
decrease by factor of 2
increase by factor of 2
I think it would stay the same, correct?

PhysicsPlease check  Marth, Wednesday, January 5, 2011 at 6:15pm
1) Yes, the gravitational force diminishes the farther you get, but by what factor? Check the equation.
2) The speed of the earth keeps it in orbit around the sun. Changing the mass changes the gravitational force, which is also the centripetal force for the orbit.

PhysicsPlease check  Damon, Wednesday, January 5, 2011 at 6:17pm
1 no, goes as 1/d^2 = 1/4
2. correct, Mearth cancels
G Me Ms/r^2 = Me v^2/r

PhysicsPlease check  JulieAnne, Wednesday, January 5, 2011 at 6:32pm
Thank you for the explanation, Damon
Answer This Question
Related Questions
 Physics  I was sitting in a park on a bench next to another person and I moved...
 PhysicsPlease check answer  Damon helped me with this calc but I think the ...
 PhysicsPlease check calculations  I posted this earler and you gave me help, ...
 Math Check My Answers Please  Bonnie has a rectangular photographic print ...
 Algebraplease check  Could someone please check my solutionThank youDRWLS ...
 PhysicsPlease check calc  I did this problem last night with Damon's help and ...
 English  Writeacher, could you please check these sentences? Thank you. 1) ...
 holt physics  a 90.0 kg person stands 1.00 m from a 60.0 kg person sitting on a...
 TO MS SUE  Please check my answers to my question, I posted this question ...
 Science ~CHECK ANSWERS PLEASE~  #1. Kilometers per hour describes the speed of ...
More Related Questions