# Newtons law

## Homework Statement

[/B]A 5228 kg flatbed truck has a 226 kg crate resting on the level bed. If the static coefficient of friction is 0.27, what is the maximum acceleration the truck can achieve without the crate slipping off?

[/B]f=ma

## The Attempt at a Solution

i believe i need to find the force on each object. it would be 5228 x 9.8 and 226 x 9.8 but i am stuck there, especially with the static coefficient of friction. i do not understand that at all

## Answers and Replies

BvU
Science Advisor
Homework Helper
The forces you mention are from gravity. Works in a vertical direction. But we can assume there is no vertical acceleration. So there must be more forces at work.
Acceleration is probably in a different direction (I don't spoil the exercise if I say: horizontal). How do you bring in a force that works in a horizontal direction ?

to find the horizontal force would you have to multiply the mass by the coefficient of friction?

BvU
Science Advisor
Homework Helper
Coëfficiënt of friction is dimensionless: it is the ratio of (the magnitude of) two forces. Which ones ?

the friction force and applied force?

BvU
Science Advisor
Homework Helper
No.

Physics isn't a guessing game. What have you learned about this subject ?