- #1

- 101

- 0

## Homework Statement

A ball rolls on a circular track of radius 0.61 m with a constant angular speed of 1.3 rad/s in the counterclockwise direction.

A. If the angular position of the ball at t= 0 is [tex]\theta[/tex]= 0, find the x component of the ball's position at the time 2.6 s. Let [tex]\theta[/tex]= 0 correspond to the positive x direction.

B. Find the x component of the ball's position at the time 5.0 s.

C.Find the x component of the ball's position at the time 7.5 s

## Homework Equations

x=Acos[tex]\theta[/tex]

[tex]\theta[/tex]=[tex]\omega[/tex]t

## The Attempt at a Solution

i used x=Acos[tex]\theta[/tex], using .61 the raduis for the A, amplitude, and the angular speed of the ball 1.3 ras/s for omega and the given times 2.6 it is not coming out right so i do not know what i am doing wrong.