The force of 0.8m strctches an elastic spring by 2cm find the elasticconstant of the spring

We can use Hooke's Law to find the elastic constant of the spring:

F = kx

where F is the force applied to the spring, x is the displacement of the spring from its equilibrium position, and k is the elastic constant (also known as the spring constant).

In this case, we are given that the force applied is 0.8 m and the displacement is 2 cm, or 0.02 m. Plugging in these values, we get:

0.8 = k(0.02)

Solving for k, we get:

k = 0.8 / 0.02

k = 40 N/m

Therefore, the elastic constant of the spring is 40 N/m.