- #1
joemama69
- 399
- 0
Homework Statement
A block is pulled along a rough surface by the force as shown in attachment
1)draw freebody diagram
2)write an expression for the normal force
3)write an expression for coefficient of kinetic friction
4)sketch graph of v vs. t & x vs. t
5)if the force is large enough, the block will lift of ground. find expression for the greatest acceleration that the block can have and still maintain contact with surface
Homework Equations
The Attempt at a Solution
1)FBD ill just explain
Left = uN
Right = FcosQ
Down = mg
Up = N
2) N = mg - FsinQ
3)F(friction) = uN = u(mg - FsinQ)
u = F/(mg-FsinQ)
4) ill explain
v vs t ... I am not sure, is the acceleration constant
x vs t ... the is a slanted line coming out of the origin to the right & up
5) FsinQ - mg = ma
a = (FsinQ-mg)/m