Answer to Question #205069 in Physics for mazzu

Question

a 2 [kg] box is attached

to two identical springs that are in their relaxed state

when the block is centered on the frictionless horizontal

floor. The box is pressed to the left and then was released

from rest as shown in the figure. If work done by the left

spring is 25 [J], what is the speed of the box

as it passes the center x = 0?

Answer 1

$$0.5mv^2=W\\0.5(2)v^2=25\\v=5\frac{m}{s}$$