A mass of 2 kg is hung from a steel wire (of diameter 1.0 mm and length 3 m) attached to the ceiling. What is the extension of the wire? (Y for steel is 20*1010) a) 0.094 mm b) 0.187 mm                           c) 0.374 mm   In the problem above, what should be the minimum radius of the wire so that the elastic limit (2.4*108 Pa) is not exceeded? a) 0.08 mm                                                        b) 0.16 mm                                     c) 0.32 mm

A mass of 2 kg is hung from a steel wire (of diameter 1.0 mm and length 3 m) attached to the ceiling. What is the extension of the wire? (Y for steel is 20*1010)

a) 0.094 mm

b) 0.187 mm                          

c) 0.374 mm

 

In the problem above, what should be the minimum radius of the wire so that the elastic limit (2.4*108 Pa) is not exceeded?

a) 0.08 mm                                                       

b) 0.16 mm                                    

c) 0.32 mm

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