A box is pressed into a spring, compressing the spring by N
0.25 m. The spring constant is k = 250 The box is
released at the bottom of a frictionless ramp and
reached a height of y = 0.50 m as shown below.
m
m
What was the mass the box?

A5 foot by 5 foot box culvert is buried 6 feet beneath the surface of the ground. a crosssection of this very long culvert (into and out of the page) is illustrated below. assume that the soil in which the culvert is buried has the following properties: jt = 120 pcf, w = 12%, ko = 0.50, ka = 0.33, and kp = 3.00. calculate the total horizontal force per unit length of culvert (fh) felt on one of the vertical faces of the culvert.