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 strain (E=210GPa)?

A weight of 10kN falls by 30mm on a collar rigidly attached to a verti

1.	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 strain (E=210GPa)?
A.	0.00089
B.	0.0005
C.	0.00064
D.	0.00098
Answer» B. 0.0005