Question

if the mass A is 1 kg and the mass of B is 6.0 kg, determine the acceleration of the system and the tension of the string if the coefficient of friction between A and the table is 0.8. (pulley problem)

I got 25 m/s as my answer but I'm not sure it's correct

Answer 1

Lets Represent Mass A as M1 and Mass B as M2 okay

Answer 2

Apply Newton Law to each of the two masses
for m2:\[m2g-T=m2a\]
for m1 \[T(tension)-μ*m1*g=m1*a\]
60-T=6a
T-80=a
-20=6a+a
a=2.8
-T=6(2.8)-60
T=42.8N