o AT&T; LTE 1:29 PM session.masteringphysics.com Tension in a Massless... Master
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o AT&T; LTE 1:29 PM session.masteringphysics.com Tension in a Massless... MasteringPhysics Let Fu and Fa (with u for up and d for down) represent the magnitude of the forces acting on the top and bottom of the rope, respectively. Assume that the rope is massless, so that its weight is negligible compared with the tension. (This is not a ridiculous approximation--modern rope materials such as Kevlar can carry tensions thousands of times greater than the weight of tens of meters of such rope.) Consider the three sections of rope labeled a, b, and c in the gure .At point I, a downward force of magnitude Fad acts on section a. At point I, an upward force of magnitude Fbu acts on section b. At point I, the tension in the rope is Ti . At point 2, a downward force of magnitude Fbd acts on section b. At point 2, an upward force of magnitude Fou acts on section c. At point 2, the tension in the rope is T2 Assume, too, that the rope is at equilibrium. Part A What is the magnitude Fad of the downward force on section a? Express your answer in terms of the tension Ti.Explanation / Answer
As it will behave like ideal string, tension at every point will be same ( massless string).
For equilibrium of the string net force on the string will be zero hence upward force will be same as downward force and this magnitude of force will be same as tension T1.
Hence answer for all forces will be T1.
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