/*

Description:

You job is to find the gravitational force between two spherical objects (obj1 , obj2).

input

Two arrays are give :

arr_val (value array), consists of 3 elements

1st element : mass of obj 1

2nd element : mass of obj 2

3rd element : distance between their centers

arr_unit (unit array), consists of 3 elements

1st element : unit for mass of obj 1

2nd element : unit for mass of obj 2

3rd element : unit for distance between their centers

mass units are :

kilogram (kg)

gram (g)

milligram (mg)

microgram (μg)

pound (lb)

distance units are :

meter (m)

centimeter (cm)

millimeter (mm)

micrometer (μm)

feet (ft)

Note

value of G = 6.67 x 10-11N.kg–2.m2

1ft = 0.3048m

1lb = 0.453592kg

return value must be Newton for force (obviously)

μ copy this from here to use it in your solution

*/

function solution([m1,m2,d],[um1,um2,ud]) {

const G = 6.67e-11 ;

const conversion = { kg:1, g:1e-3, mg:1e-6, μg:1e-9, lb:.453592

, m:1, cm:1e-2, mm:1e-3, μm:1e-6, ft:.3048

} ;

return G * m1 * conversion[um1] * m2 * conversion[um2] / ( d * conversion[ud] ) ** 2 ;

}