tolong jawab kak bsk d kmpulkan

diketahui:
mA = 2kg
mB = 2kg
g= 19 m/s²
F = 50 N

Ditanya : 
a. a=..?
b. NB =...?
c. T =...?

Jawab:

a. a = f/mA+mB
a = 50/2+2
a = 50/4
a = 12,5 m/s²

b.WB = m.g = 2.10 = 20 N
NB = WB = 20 N

c.T = mB.a
T = 2.12,5
T = 25 N