- #1

APPhysic

- 3

- 0

## Homework Statement

A 1.00-kg aluminum block and a 4.00-kg copper block are connected by a light string over a frictionless pulley. The two blocks

are allowed to move on a fixed steel block wedge (of angle 31.0°). The aluminum block is on the left side, on a flat plane. On the right is the copper block, sitting at a 31 degree angle. Picture is attached for clarification.

Coefficient of static friction for aluminum on steel: .61 Copper on steel: .53

Coefficient of kinetic friction for aluminum on steel: .47 Copper on steel: .36

## Homework Equations

F=ma

ƩFx=Fg

_{x}-tension-frictional force=(m

_{2})(acceleration)

Normal force=(massofcopperblock)(gravity)(cosθ)

## The Attempt at a Solution

I was able to get the components of the force of gravity on the copper block: ≈33.6 N perpendicular to the plane, and ≈20.19 N parallel to the plane. Also, the normal force is 33.6 N. On the aluminum block, the normal and gravitational forces are both 9.8 N. From here, I am unsure how to incorporate the angle, the frictional forces, and how these will factor into solving for tension and acceleration of the bl

I seriously appreciate any help. It really means a lot for you to take the time to help a stranger out, I thank you immensely.