tolong bantu nmr 14&15 yaa makasih:) pke uraiannya(cara kerja)

14.
Rx : 4rb
Gx : 1/4 gb
Mb : m
Mx :?

Gb/gx = mb/rb^2 = mx/rx^2

Gb/ (1/4gb) = m/rb^2 = mx / 16rb^2

4 = 16m/mx

Mx = 4m


15.

Ga/Gb = 1/ra^2 = 1/rb^2

g/gb = 1/ra^2 = 1/ 16ra^2

g/gb = 16 ra^2 / ra^2

Gb = g/16