<img src="https://tex.z-dn.net/?f=%5Cmathrm%7B%5Clarge%7BEcuaciones%3A%7D%7D" />
<img src="https://tex.z-dn.net/?f=%5Cdisplaystyle%7B%5Csum%20F_y%3Dm.a%7D" />
<img src="https://tex.z-dn.net/?f=%20T-P%3Dm.a%20" />
<img src="https://tex.z-dn.net/?f=%20P%3Dm.g%20" />
<img src="https://tex.z-dn.net/?f=%5Cdisplaystyle%7B%5Cmathrm%7B%5Clarge%7BDatos%3A%7D%7D%5Cbegin%7Bcases%7DP%3D10kg%5Ctimes%209%2C8%5Cfrac%7Bm%7D%7Bs%5E2%7D%3D98N%5Ccr%20%5Ccr%20a%3D3%5Cfrac%7Bm%7D%7Bs%5E2%7D%5Cend%7Bcases%7D%7D" />
<img src="https://tex.z-dn.net/?f=%5Cmathrm%7B%5Clarge%7BDespejar%20%5C%20T%7D%7D" />
<img src="https://tex.z-dn.net/?f=T%3Dm.a%2BP" />
<img src="https://tex.z-dn.net/?f=%5Cmathrm%7B%5Clarge%7BReemplazando%3A%7D%7D" />
<img src="https://tex.z-dn.net/?f=%20T%3D10kg%5Ctimes%203%5Cfrac%7Bm%7D%7Bs%5E2%7D%2B98N%5CRightarrow%20T%3D30N%2B98N" />
<img src="https://tex.z-dn.net/?f=T%3D128N%20" />
[img = 10]
la tensión de la cuerda es de 128N.