Question

Please Help!! I do not understand!!

Answer 1

Normal (N) and gravity force (W)

assume g = 10 m/s²

a. N = W = m₁.g = 3 x 10 = 10 N

b. W = m₂.g = 1.5 x 10 = 15 N

c. N = (m₁+m₂)g = 4.5 x 10 = 45 N