- #1
++A++
- 3
- 0
A point mass of 3.8kg is on the x-axis at x=8.2 and an equal point mass is on the y-axis at y=5.9. What is the magnitude of the gravitational field from these two masses at the origin?
Well for this problem I tried using the equation F= G m1 m2/ r^2
for r I added 8.2 and 5.9
for G I used the number given in my book 6.67E-11
I am thinking that maybe I am not finding r the right way but then I found this equation in my book
F1,2 =( - G m1 m2 / r^2 (1,2) ) * r1,2
and am now very confused. Please help me sort out this mess!
Well for this problem I tried using the equation F= G m1 m2/ r^2
for r I added 8.2 and 5.9
for G I used the number given in my book 6.67E-11
I am thinking that maybe I am not finding r the right way but then I found this equation in my book
F1,2 =( - G m1 m2 / r^2 (1,2) ) * r1,2
and am now very confused. Please help me sort out this mess!