Question

The spring constant of a simply supported beam having length (l), modulus of elasticity (e) and area moment of inertia (i) subjected to load w at mid-point is (48ei)/l3 (8ei)/l3 l3/48ei 3ei/l3

Answer 1

This is an incomplete question. "The spring constant of a simply supported beam having length (l), modulus of elasticity (e) and area moment of inertia (i) subjected to load w at mid-point is (48ei)/l3 (8ei)/l3 l3/48ei 3ei/l3" is all that is written.
The Spring Constant Formula is F = kx.