Question

correct answer will surely get brillianist *explanation needed​*​

Answer 1

Answer:

$we \: know \: that \: force \: exerted \: on \\ body \: by \: mass = weight \\ then \: f = mg \\ m = 40kg \\ g = 9.8 \frac{m}{ {s}^{2} } \\ f = 40 \times 9.8 = 392newton \\ \: thank \: you$