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The longer, top cord loops over a frictionless pulley and pulls with a force of magnitude 74 N on the wall to which it is attached. The tensions in the shorter cords are T₁ = 40.0 N, T₂ = 32.0 N, and T₃ = 8.0 N.

What are the masses of each disk?

(a) disk A
kg

(b) disk B
kg

(c) disk C
kg

(d) disk D
kg

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