- #1
Np14
- 27
- 2
- Homework Statement
- See picture.
- Relevant Equations
- τ[SUB]NET[/SUB] = Iα = F[SUB]NET[/SUB]r
a[SUB]T[/SUB] = rα
F = ma
PART B ONLY:
The cylinder undergoes torque when the mass m2 is removed:
τNET = Iα = FNETr
= 45α = FT(0.5)
FT = 90α, therefore msystem = 90 kg
After this step, I am not sure what to do.
τ = ΣF = Fg - Ft
= ma = (20 kg)(9.8 m/s2) - (90α)
= 196 - 90α
α = 2.17 rad/s2, which is incorrect
Can someone please help me figure out my mistake?