- #1
sweet877
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F2 <------[ M ]---T---[ m ]----> F1
F2 = 20 N
M = 2.0 kg
m = 1.0 kg
F1 = 30 N
Find T, tension.
So F1-F2 = (M+m)a.
a=10/3 = 3.3 m/s^2
Fnet= Ma
T-F2 = Ma
T = Ma + F2 = 2.0(3.3) + 20 = 27 N
However, I don't think this is right because I got a different answer when I used the other block:
Fnet = ma
F1 - T2 = ma
T2 = F1 - ma = 30-1.0(9.8) = 20 N
Where did I go wrong? Thanks.
edit: Never mind. Figured out I used g instead of a.
F2 = 20 N
M = 2.0 kg
m = 1.0 kg
F1 = 30 N
Find T, tension.
So F1-F2 = (M+m)a.
a=10/3 = 3.3 m/s^2
Fnet= Ma
T-F2 = Ma
T = Ma + F2 = 2.0(3.3) + 20 = 27 N
However, I don't think this is right because I got a different answer when I used the other block:
Fnet = ma
F1 - T2 = ma
T2 = F1 - ma = 30-1.0(9.8) = 20 N
Where did I go wrong? Thanks.
edit: Never mind. Figured out I used g instead of a.
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