Two Weights Are Connected by a Massless Wire and Pulled

question 16

Multiple Choice

Two weights are connected by a massless wire and pulled upward with a constant speed of 1.50 m/s by a vertical pull P. The tension in the wire is T (see figure) . Which one of the following relationships between T and P must be true?

• A) T > P
• B) T = P
• C) P + T = 125 N
• D) P = T + 25 N
• E) P = T + 100 N