1. If a car has a suspension system with a force constant of 5.40 ? 10⁴ N/m, how much energy must the car's shocks remove to dampen an oscillation starting with a maximum displacement of 0.0730 m?   ___________J

2. a) How much (in m) will a spring that has a force constant of 39.0 N/m be stretched by a 0.480 kg mass hung motionless from it? ________m

b) Calculate the decrease in gravitational potential energy (in J) of the 0.480 kg mass when it descends this distance. _________J

c) Part of this gravitational energy goes into the spring. Calculate the energy stored in the spring by this stretch, and compare it in the spring with the gravitational potential energy.  __________J and ____________(energy in spring/gravitational energy)

d) Explain where the rest of the energy might go :_________________________________

3. A transverse wave is traveling through a canal. If the distance between two successive crests is 2.37 m and four crests of the wave pass a buoy along the direction of travel every 19.6 s, determine the following.

a) frequency of the wave _________Hz

b) speed at which the wave is traveling through the canal ________m/s