What is the tension in a system of 2 pulleys when acceleration is 0?

[Member69383]

Homework Statement

Calculate the tension T in case a, b, and c if acceleration = 0.

Ws = weight of the bottom pulley
W = weight of the weight

Homework Equations

mg - T = m*a

The Attempt at a Solution

For a, it just seems like T = Ws + Wm since the bottom pulley is connected to the top pulley.

For b, the force is being redirected by the pulley.

For c, two masses are balanced along the pulley yet only the tension of one mass is measured.

 

[haruspex]

For a, it just seems like T = Ws + Wm since the bottom pulley is connected to the top pulley.

Take a close look at the small pulley in the lower block. How many arrows point up from it? What force does each of those arrows represent?

 

[Member69383]

Just figured it out. Thanks!