1. the coefficient of static friction between the 3.00 kg crate and the 35 degree incline is .300. What is the magnitude of the minimum force,

*F*, that must be applied to the crate perpendicular to the incline to prevent the crate from sliding down the incline?

: so i know the answer is 32.2 N but im not sure how to get it , do i need to resovle the vectors of gravity(weight)

2.Three blocks are in contact with eachother on a frictionless horizantal surface. A horizantal force,

**F,**is applied to m1 (the first box). For this problem, m1=2kg, m2=3kg, m3=4kg, and

**F**= 180N to the right.

a. find the acceleration of the blocks.

b. find the resultant force on each block.

c. find the magnitude of the contact forces.