Consider the earth following its nearly circular orbit (dashed curve) about the
ID: 1343219 • Letter: C
Question
Consider the earth following its nearly circular orbit (dashed curve) about the sun.(Figure 2) The earth has mass mearth=5.98×1024kg and the sun has mass msun=1.99×1030kg. They are separated, center to center, by r=93millionmiles=150millionkm.
3. What is the size of the gravitational force acting on the sun due to the earth?
What is the size of the gravitational force acting on the sun due to the earth?
The earth does not exert any gravitational force on the sun._______________ The earth exerts some force on the sun, but less than 3.53×1022N because the earth, which is exerting the force, is so much less massive than the sun.
_______________ The earth exerts 3.53×1022N of force on the sun, exactly the same amount of force the sun exerts on the earth found in Part A.
_______________ The earth exerts more than 3.53×1022N of force on the sun because the sun, which is experiencing the force, is so much more massive than the earth.
_______________
Explanation / Answer
Here ,
as the gravitational force acting on the sun is
F = G * M * m /d^2
F = 6.673 *10^-11 * 5.98 *10^24 * 1.99 *10^30/(150 *10^6 * 1 *10^3)^2
solving for F
F = 3.53 *10^22 N
the size of the gravitational force acting on the sun due to the earth is 3.53 *10^22 N
The earth exerts 3.53×1022N of force on the sun, exactly the same amount of force the sun exerts on the earth found in Part A