Question

This is what might be a simple physics question. but i've been sick and am so lost.
a 15.0 kg box is released on a 32 degree incline and acclerates down the incline at .30 m/s^2. find the friction force impeding its motion. what is the coefficient of kinetic friction?
how do i start this?

Answer 1

Do the free body diagram and calculate the y component of acceleration

Answer 2

with why being perpendicular to the surface?

Answer 3

sorry Y****

Answer 4

YEs

Answer 5

hm ok thanks

Answer 6

\[g\sin{32}-f_rg\cos{32}=0.3\]
\[g=9.8\]
By solving, we get
\[f_r=0.9639\]

Answer 7

ah thank you