Three wires are cut to same orinal length, L. They have thesame diameter, but ar

Question

Three wires are cut to same orinal length, L. They have thesame diameter, but are made of Steel (Est = 200x109N/m2), Aluminum (Eal = 70x109N/m2), and Polysteyrene (Eps = 3x109N/m2). Each wire is attached to an identical mass (m)which is much larger than wire's mass, and hung as a simplependulum. Rank, in order, the period (Tst, Tal, Tps) of smalloscillation for the mass attached to each wire. Thanks for your help. Three wires are cut to same orinal length, L. They have thesame diameter, but are made of Steel (Est = 200x109N/m2), Aluminum (Eal = 70x109N/m2), and Polysteyrene (Eps = 3x109N/m2). Each wire is attached to an identical mass (m)which is much larger than wire's mass, and hung as a simplependulum. Rank, in order, the period (Tst, Tal, Tps) of smalloscillation for the mass attached to each wire. Thanks for your help.

Explanation / Answer

The idea is that the longest pendulum has the longestperiod... and the longest is the one which stretches themost. . The polystyrene stretches most, the steel stretches least...so: .      Smallestoscillation:     Tsteel .      Middleoscillation:   Taluminum .      Longestoscillation:   Tpolystyrene .      Longestoscillation:   Tpolystyrene

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