tolong jawab nomor 22 (pake jalan)

Diket : m = 60 Kg
a = 3 m/s²
g = 10 m/s²
Dit : N =..........?

Penyelesaian :

w - N = m . a

N = w - m . a
= (m . g) - (m . a)
= (60 . 10) - (60 .3)
= 600 - 180
= 420 N