Tag: How much energy can be stored in a spring with k = 490 N/m if the maximum possible stretch is 20 cm?

How much energy can be stored in a spring with k = 490 N/m if the maximum possible stretch is 20 cm? Known variables: k=490 x= 20cm or .2m Kinetic Energy Equation K.E= 1/2kx2 Once you know your variables and your equation, just plug it in. K.E= .5 x (490) x (.2)2 K.E= 9.8 J