The scale reads 28 n when the lower spring has been compressed by 2.2 cm . what is the value of the spring constant for the lower spring? express your answer to two significant figures and include the appropriate units.

Explanation:

We can solve the problem by using Hooke's law:

where

F is the force applied to the spring

k is the spring constant

x is the compression/stretching of the spring

For the spring in the problem, we have

F = 28 N

x = 2.2 cm = 0.022 m

Solving for k, we find

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle