A 200 M Brass Rod with a 1 $\times$ 10¹⁰ N/m²,then the Spring Constant of the Rod Is
A)

Multiple Choice

A 2.00 m brass rod with a 1.00 mm diameter is used as a spring by stretching the rod.If the tensile modulus of brass is 9.10 $\times$ 10¹⁰ N/m²,then the spring constant of the rod is

A) 4.67 $\times$ 10⁴ N/m.
B) 4.22 $\times$ 10⁴ N/m.
C) 3.57 $\times$ 10⁴ N/m.
D) 2.47 $\times$ 10⁴ N/m.
E) 2.13 $\times$ 10⁴ N/m.