# Kinetic Energy, Conservation of Energy, Potential Energy, etc

#### nicknaq

1. The problem statement, all variables and given/known data
see the diagram two posts below this.
A bead slides on a wire, which is in a vertical plane, as shown in the diagram. Gravity acts in the -y direction. The bead starts at A, moving to the right with an initial velocity v. The wire is frictionless between A and D and between F and G, but there is friction between D and F. (For each statement select True, False, Greater than, Less than, Equal to, or Not enough information to tell.
1. The speed at A is ______ the speed at C
2. True or False: Between C and D, the speed increases, then decreases
3. The bead's kinetic energy at D is _____ its kinetic energy at F
4. The total energy of the bead at A is ______ the total energy at B

2. Relevant equations

3. The attempt at a solution
1. less than because potential energy is converted into kinetic
2. false because I can't see why it would decrease
3. less than because potential energy is converted to kinetic
4. equal to because energy is conserved and this part is frictionless

Last edited:

#### Kreamer

Would be easier if I could access the diagram.. the link requires an account on that site.

#### nicknaq

sorry everyone here's the new diagram

#### Attachments

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#### nicknaq

one last bump. Please. It's due in a few hours.

#### nicknaq

nevermind, got it
:)

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