A load of 100N falls through a height of 2cm onto a collar rigidly attached to the lower end of a vertical bar 1.5m long and of 105cm2 cross- sectional area. The upper end of the vertical bar is fixed. What is the maximum instantaneous stress induced in the vertical bar if E = 200GPa?

A load of 100N falls through a height of 2cm onto a collar rigidly att

1.	A load of 100N falls through a height of 2cm onto a collar rigidly attached to the lower end of a vertical bar 1.5m long and of 105cm2 cross- sectional area. The upper end of the vertical bar is fixed. What is the maximum instantaneous stress induced in the vertical bar if E = 200GPa?
A.	50.87 N/mm<sup>2</sup>
B.	60.23 N/mm<sup>2</sup>
C.	45.24 N/mm<sup>2</sup>
D.	63.14 N/mm<sup>2</sup>
Answer» C. 45.24 N/mm<sup>2</sup>

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A load of 100N falls through a height of 2cm onto a collar rigidly attached to the lower end of a vertical bar 1.5m long and of 105cm2 cross- sectional area. The upper end of the vertical bar is fixed. What is the maximum instantaneous stress induced in the vertical bar if E = 200GPa?

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