- Thread starter
- #1

I calculated coefficient of friction = 0.554.

U=20m/s v= 0 and s= 25m.

By using v^2= u^2+2as, I got a= -8m/s^2.

I can't calculate after this.

Pls help

- Thread starter Shah 72
- Start date

- Thread starter
- #1

I calculated coefficient of friction = 0.554.

U=20m/s v= 0 and s= 25m.

By using v^2= u^2+2as, I got a= -8m/s^2.

I can't calculate after this.

Pls help

- Mar 1, 2012

- 935

$a = \dfrac{0^2-20^2}{50} = -8 \, m/s^2 = -10[\sin(29)+\mu\cos(29)] \implies \mu = 0.36$

try again …