Find the stiffness of the spring, which is 10 cm under the force of 5H.

The force of elasticity of the spring F is found by the formula Fel = -k * x, where k is the stiffness of the spring, and x is the tension. It is necessary to find the stiffness k, so we express this variable:

k = Fcont / x. The formula for stiffness is obtained without a minus sign, since in the formula for the elastic force “-” shows the direction, but the stiffness does not have a direction. Substitute the values into the formula, converting 10 cm to meters.

k = 5 N / 0.1 m = 50 N / m