Does T3 Equal the Sum of m1g, M2g, and Mpg in a Frictionless Pulley System?

AI Thread Summary
In a frictionless pulley system, the tension T3 is analyzed in relation to the weights of the masses involved. The discussion confirms that T3 is equal to the sum of m1g, M2g, and Mpg, while T1 is less than m1g and T2 is equal to T1. The center of mass of the system does not accelerate, indicating equilibrium. The attempts to categorize the relationships between the tensions and weights are evaluated, with particular focus on the correctness of the statement regarding T3. The conclusion drawn is that T3 is indeed less than the total of m1g, M2g, and Mpg when accounting for the tensions T1 and T2.
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Homework Statement


A pulley with mass Mp and a radius Rp is attached to the ceiling, in a gravity field of 9.81 m/s2 and rotates with no friction about its pivot. Mass M2 is larger than mass m1. T3 holds the pulley. The quantities Tn and g are magnitudes.
(Select T-True, F-False, G-Greater than, L-Less than, E-Equal to. If the first is T, the second L and the rest E, enter TLEEEE).

A) T3 is ... T1 + T2 [ Attempt: Less Than ]
B) T1 is ... m1g. [ Attempt: Less Than ]
C) The C.M. of Mp+M1+M2 does not accelerate. [ Attempt: True ]
D) T3 is ... m1g + M2g + Mpg.[ Attempt: Equal ]
E) T1 is ... T2 [ Attempt: Equal ]
F) The magnitude of the acceleration of M2 is ... that of m1. [ Attempt: Equal ]

Can you please check if one of my attempts are correct? Thanks
 
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i think in D) T3 = m1g + m2g + Mpg - T1 - T2

so T3 is less than m1g + m2g + mpg
 
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