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Homework Help
Introductory Physics Homework Help
Pulling mass with motor through pulley (with mass)
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[QUOTE="Esoremada, post: 4537194, member: 286304"] [h2]Homework Statement [/h2] [PLAIN]http://puu.sh/4PDPV.png[/PLAIN] [h2]Homework Equations[/h2] τ = I*α τ = r*F [h2]The Attempt at a Solution[/h2] EDIT2: Nevermind, manipulated the torque equations wrong, got it now EDIT: Tried again and ended up with an actual answer, but still got it wrong :/ This is the FBD I used [PLAIN]http://puu.sh/4PH7l.png[/PLAIN] m = 1060 kg Ft2 = 10900 I = 75.5 kg*m^2 r = 0.757 m1060a = Ft1 - 1060*9.81 τ = I*r*a τ = r*F F = 10900 - Ft1 I*r*a = r*F I*a = F 75.5*a = 10900 - Ft1 1060a = Ft1 - 1060*9.81 Ft1 = 1060a + 1060*9.81 75.5a = 10900 - Ft1 75.5a = 10900 - (1060a + 1060*9.81) 75.5a = 10900 - 1060a - 1060*9.81 1060a + 75.5a = 10900 - 1060*9.81 a = (10900 - 1060*9.81) / (1060 + 75.5) = 0.44157 [/QUOTE]
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Introductory Physics Homework Help
Pulling mass with motor through pulley (with mass)
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