Question

física ajudem prof ✍✍✍✍

Answer 1

[1]: T - pA = mA * a
[2]: pB - T = mB * a

pA = mA * g = 0,5*10 = 5 N
pB = mB * g = 1,5*10 = 15 N

[1]: T - 5 = 0,5*a
[2]: 15 - T = 1,5*a 

[1]+[2]:
10 = 2*a
a = 5 m/s²

[1]:
T - 5 = 0,5*5
T = 7,5 N