- #1

Jozefina Gramatikova

- 64

- 9

## Homework Statement

CLASSICAL MECHANICS

## Homework Equations

E=U+K[/B]

## The Attempt at a Solution

Guys, can you please help me with part b) ? I am not sure how to find the velocity. Thanks

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- Thread starter Jozefina Gramatikova
- Start date

- #1

Jozefina Gramatikova

- 64

- 9

CLASSICAL MECHANICS

E=U+K[/B]

Guys, can you please help me with part b) ? I am not sure how to find the velocity. Thanks

- #2

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- #3

Jozefina Gramatikova

- 64

- 9

- #4

BvU

Science Advisor

Homework Helper

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Any relevant equations linking kinetic energy to velocity ?

- #5

- #6

Jozefina Gramatikova

- 64

- 9

Could you tell me if this is true?

If U=-u , then E**≈ 0**

if U=0, then E**≈ -u**

If U=-u , then E

if U=0, then E

- #7

BvU

Science Advisor

Homework Helper

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U is the potential energy

E is the total energy of the particle, an independent variable in this exercise.

As you almost say (well, guess) in #3, the given information tthat the particle is bounded leads to ##-u \le E < 0##.

With K the kinetic energy and, as you say, E = K + U you can write down the bounds of K and thereby the bounds of v. And derive the period of the motion.

- #8

- #9

Jozefina Gramatikova

- 64

- 9

Is it -u<=K<0 ? and then v<0 ?

- #10

Jozefina Gramatikova

- 64

- 9

PLS help

- #11

Gordianus

- 460

- 116

Ah...the curse of negative numbers...

Please, remember K is always a positive number.

Please, remember K is always a positive number.

- #12

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