Just as before,
an ideal spring of rest length **L = 2 m** and spring
constant **k = 120 N/m** is placed on a ramp of angle
**theta = 20 degrees**.
This time, however, the ramp is not frictionless;
instead, it has coefficient of kinetic friction
**mu _{k} = 0.07 **.
You then gently place a block of mass

- At this moment, what is the total energy of the spring-and-block
system? State clearly your choice of zero for all potential
energies.
You now release the block, and it starts to slide up the ramp.

- What is the speed of the block when the spring returns
to its rest length?
- As the block continues to slide up the ramp, it pulls
the spring with it; the spring is now stretched beyond
its rest length. What is the speed of the block
when it reaches a distance
**x2 = 0.0412 m**beyond the spring's rest length? - How far beyond its rest length will the spring stretch until the block comes to a momentary halt (and then slides back down)?

Copyright © Michael Richmond. This work is licensed under a Creative Commons License.