A weight of 10kN falls by 30mm on a collar rigidly attached to a vertical bar 4m

Question

A weight of 10kN falls by 30mm on a collar rigidly attached to a vertical bar 4m long and 1000mm² in section. What will be the instantaneous stress (E=210GPa)?

Options:

A . 149.4 N/mm²

B . 179.24 N/mm²

C . 187.7 N/mm²

D . 156.1 N/mm²

Answer: Option C
Answer: (c).187.7 N/mm²

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