Find Tension in String: Friction & Pulley

[lostfan176]

An 8.0-kg hanging block is connected by a string over a pulley to a 6.5-kg block sliding on a flat table. If the coefficient of sliding friction is 0.28, find the tension in the string.

is the answer 41.02 N ?

 

[tyco05]

How did you work it out?

 

[lostfan176]

((8*9.8)/2)+(6.5*.28)

 

[aq1q]

so, we assume that the 6.5 block is sliding? not at rest?

 

[lostfan176]

so, we assume that the 6.5 block is sliding? not at rest?

i guess so

 

[aq1q]

well, draw the free body diagrams..and find what the acceleration is. Since they are both connected by a string, they will accelerate (different directions) with the same magnitudes.

 

[aq1q]

getting the free body diagram correct is essential

 

[aq1q]

well i am getting an answer in the 40s, i don't want to say the answer.. anyway i got to go.