A crate is sitting on the back of a truck at 20 m/s with a μ of 0.4. With what acceleration can the truck stop without having the crate slide?
I'm not sure if I am supposed to use this equation:
a = μ(9.8)
Any help is appreciated.
first draw a picture. Realize that these forces are acting on it:
Normal, friction, and weight.
Now break up those forces into componets (x and y)
when you do this, you should get friction = ma(in x dir.)
Acceleration in y dir. is zero.
Normal Force = mg