- #1

Unicow

- 14

- 0

## Homework Statement

## Homework Equations

The equation has already been given in the question.

## The Attempt at a Solution

So what I did was find r'(t), r"(t), v(t), v'(t) and plug it into the equation. I've done 3 different full pages of this and have gotten 3 different answers. I'm guessing due to simple arithmetic errors, can someone help me figure this out and what I may have done wrong? I will post the full work I did on here but I don't think it will be very legible or even worth trying to go through because of how annoying this problem gets. I'm going to be working through it once more but I'd appreciate it if someone else could share what answer they got... I normally don't like taking straight up answers and I like solving it myself but I think I'm going to lose my damn mind.

I forgot to share atleast the components I found.

Since r(t) = <t - sin(t), 1 - cos(t)>

r'(t) = <1 - cos(t), sin(t)>

r"(t) = <sin(t), cos(t)

v(t) = sqrt(2 - 2cos(t))

v'(t) = sin(t) / sqrt(2 - 2cos(t))