Question

Urgenteeeeeee!!!!!!!!!

Answer 1

$fat = fn \times y \\ \\ 390 = fn \times \frac{6}{10} \\ \\ fn = 390 \times \frac{5}{3} \\ \\ fn = 130 \times 5 \\ \\ fn = 650$

Observe na imagem que a força normal é igual ao peso nesse caso.

$p = mg \\ \\ 650 = m10 \\ \\m = 65$