- #1

Brendan Webb

- 26

- 0

HW Template missing as it was moved from another forum

Hi

A 90 kg box is pushed by a horizontal force

My attempt at a solution.

I diagrammed the problem as in the file uploaded. To figure out the horizontal force required to counter the force of the box sliding down the incline I figured that the horizontal force would have to be the hypotenuse because it needs to be stronger than both Fn and Fg(sin28). However, it shows the normal force being larger than Fg(sin28) in terms of side lengths when it should be the opposite way around. I am confused on how to solve this problem even though it has been posted before on this website. Any help would be much appreciated.

Thanks

Brendan

A 90 kg box is pushed by a horizontal force

**F**at constant speed up a ramp inclined at 28°, as shown. Determine the magnitude of the applied force.- when the ramp is frictionless.

My attempt at a solution.

I diagrammed the problem as in the file uploaded. To figure out the horizontal force required to counter the force of the box sliding down the incline I figured that the horizontal force would have to be the hypotenuse because it needs to be stronger than both Fn and Fg(sin28). However, it shows the normal force being larger than Fg(sin28) in terms of side lengths when it should be the opposite way around. I am confused on how to solve this problem even though it has been posted before on this website. Any help would be much appreciated.

Thanks

Brendan