Couldn't find it all over the net... or if I could, I get the same answer... So was wondering if anyone with some physics knowledge would be able to see what I'm doing wrong....


A 113 kg chesterfield is pushed up a frictionless ramp at a constant speed by a delivery person. If the ramp is inclined at 29.2° to the horizontal, what horizontal force must the delivery person apply to the chesterfield? <--- got this part right (6.20e2 N)


What is the magnitude of the normal force that is exerted on the chesterfield by the ramp?!?!?!

This is what I keep doing and have tried all sorts of sig figs... Here's my work... (@ = theta)

F=mg=113*9.81
Fn=mg*cos(@)
=113*9.81*cos29.2
=967 N

Any help?

Please and thank you!

Originally Posted by patela77

Couldn't find it all over the net... or if I could, I get the same answer... So was wondering if anyone with some physics knowledge would be able to see what I'm doing wrong....


A 113 kg chesterfield is pushed up a frictionless ramp at a constant speed by a delivery person. If the ramp is inclined at 29.2° to the horizontal, what horizontal force must the delivery person apply to the chesterfield? <--- got this part right (6.20e2 N)


What is the magnitude of the normal force that is exerted on the chesterfield by the ramp?!?!?!

This is what I keep doing and have tried all sorts of sig figs... Here's my work... (@ = theta)

F=mg=113*9.81
Fn=mg*cos(@)
=113*9.81*cos29.2
=967 N

Any help?

Please and thank you!

Use Avenue. We are NOT here to do your homework, and we are certainly NOT here to help you cheat on CAPA. You have a number of resources for this course - use them.

Remember that the normal force is perpendicular to your surface and that it is a vector.
It should have x and y components and you're taking the magnitude of it.

Which in your case is just...

Hope this helps.

Originally Posted by britb

Use Avenue. We are NOT here to do your homework, and we are certainly NOT here to help you cheat on CAPA. You have a number of resources for this course - use them.

not a problem. just thought i could put it out there since i saw older posts of people helping others on capa.

capa was the worst part of eng1

Originally Posted by VastHorizon

Remember that the normal force is perpendicular to your surface and that it is a vector.
It should have x and y components and you're taking the magnitude of it.

Which is just...

Hope this helps.

thanks for the help! seems easy enough.

i guess people aren't posting plug and play answers on capa anymore

I would help you if I remembered this shit, sorry :(