An unknown weight falls through a height of 10mm on a collar rigidly attached to a lower end of a vertical bar 500cm long. If E =200GPa what will be the value of stress ?$

An unknown weight falls through a height of 10mm on a collar rigidly a

1.	An unknown weight falls through a height of 10mm on a collar rigidly attached to a lower end of a vertical bar 500cm long. If E =200GPa what will be the value of stress ?$
A.	50 N/mm<sup>2</sup>
B.	60 N/mm<sup>2</sup>
C.	70 N/mm<sup>2</sup>
D.	80 N/mm<sup>2</sup>
Answer» E.

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An unknown weight falls through a height of 10mm on a collar rigidly attached to a lower end of a vertical bar 500cm long. If E =200GPa what will be the value of stress ?$

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