Solving Frictionless Pulley System: Acceleration & Tension Force

[slobodan48]

Homework Statement

Two masses are places in a frictionless pulley system. Solve for the acceleration and tension force. )its a pullz question and the mu=0.1

Homework Equations

So i know that Fg=MG
Fnet=ma
Ff=MFn
How can i solve this question? how come Fnet=Ft came out of nowhere?

The Attempt at a Solution

 

[Cryxic]

This seems to be an Atwood machine problem, although I don't understand the last part of the problem statement.

You will want to set up the equations of motion for each mass. For mass m(1):

F1 = m(1)*a = T -m(1)*g = 0

For m(2):

F2 = m(2)*a = m(2)*g - T = 0

To solve for tension, first solve the two equations for acceleration (a) and then set them equal to each other. Then solve for T. For acceleration, solve the equation for T and set them equal to each other. Then solve for a.

 

[slobodan48]

well the mu is 0.1 and i don't know were did you get the m and t-m

 

[Cryxic]

well the mu is 0.1 and i don't know were did you get the m and t-m

Here's where I'm getting confused. What is mu?

 

[slobodan48]

well it looks like a U,its the coefficent of friction, its grade 11 physics

 

[Cryxic]

well it looks like a U,its the coefficent of friction, its grade 11 physics

But you said the system was frictionless.

 

[slobodan48]

shoot, my bad i was looking at the wrong question. sorry