- #1

DrummingAtom

- 659

- 2

## Homework Statement

A block rests on a level floor. To move it at a constant velocity, why do you exert less force if you pull it at an angle above the horizontal than if you push it at the same angle below the horizontal?

## Homework Equations

## The Attempt at a Solution

I know that pushing at an angle below the horizontal is going to add to the weight (w) of the block. I've come up with these expressions:

1) F

_{pull}= w*sin(θ)

2) F

_{push}= w/sin(θ)

Since w in 1) is going to be multiplied by a number less than 1 it's going to decrease the magnitude of F. And since w in 2) is going to be divided by a number less than 1 it's going to increase the magnitude of F.

Is this the best way to express this relationship? Thanks for any help.