- #1
hkor
- 15
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Homework Statement
You place a 2kg box against the side of a cart. Nothing is used to stick the box to the cart which accelerates to the right. The coefficient of static friction is 0.6.
Find the minimum acceleration of the cart needed so that the box does not fall
Homework Equations
F=m.us
F=ma
The Attempt at a Solution
Im having trouble understanding the concepts behind this question. Maybe because we are using the static force of friction when the object is moving and not stationary.
Does the box remain on the cart when the friction force is equal to the acceleration?
what if the force is greater than fs?
or what if it is less?. Obviously I know that it will fall. but why? because shouldn't the box be stationary if fs>F
Any help or explanation would be great
Cheers :)