Recordando el principio de Pascal :
<img src="https://tex.z-dn.net/?f=P_%7B1%7D%3DP_%7B2%7D" />
y recordando que :
<img src="https://tex.z-dn.net/?f=%20P%3D%5Cfrac%7BF%7D%7BA%7D" />
entonces :
<img src="https://tex.z-dn.net/?f=%5Cfrac%7BF_%7B1%7D%7D%7BA_%7B1%7D%7D%3D%5Cfrac%7BF_%7B2%7D%7D%7BA_%7B2%7D%7D" />
Despejando <img src="https://tex.z-dn.net/?f=F_%7B2%7D" /> se obtiene :
<img src="https://tex.z-dn.net/?f=%5Cfrac%7BA_%7B2%7D%7D%7BA_%7B1%7D%7DF_%7B1%7D%3DF_%7B2%7D" />
Sustituyendo los valores dados, previa conversion de centimetros a metros se tiene :
<img src="https://tex.z-dn.net/?f=F_%7B2%7D%3D%5Cfrac%7B10.10%5E%7B-4%7D%5C%2Cm%5E%7B2%7D%7D%7B150.10%5E%7B-4%7D%5C%2Cm%5E%7B2%7D%7D%2810500%5C%2CN%29" />
<img src="https://tex.z-dn.net/?f=F_%7B2%7D%3D%5Cfrac%7B1%7D%7B15%7D%2810500%5C%2CN%29%5C%5C%20F_%7B2%7D%3D700%5C%2CN" />
Saludos.