- #1

Affie

- 2

- 0

## Homework Statement

A net force of 4N to the right is applied to a box of 6kg while moving it a distance of 3m to the right.

(1)How much work is done on the box?

(2)What if the force is applied at a 30 degree angle above horizontal?

## Homework Equations

(1) W=Fdcos(angle)

(2) F=ma

(3) W=Kf-Ki=((1/2)mv^2)-((1/2)mv^2)

## The Attempt at a Solution

For the first question, to find the work done on the box, I plugged numbers into equation (1).

W=(4N)(3m)cos(0)

Cos(0)=1, W=12J

I don't even know where to begin for question (2). It seems to me that, in order to caclulate Force, I need the acceleration to plug into equation 2, or I need velocities to calculate work in equation (3). I have neither, and I can't think of any other applicable equations. I assumed friction was negligable since it was not mentioned.