# Newton laws object on incline in equlibrium

## Homework Statement

A block of mass m=2.0kg is held in equilibrium on an incline of angle=60 degrees by the horizontal force F.
a)determine the value of F
b)determine the normal force exerted by the incline on the block (ignore friction).

Fnet = ma
Fnetx = 0
Fnety = 0

## The Attempt at a Solution

So, first I thought about it
If it is held in equilibrum, doesn't it means the object is at rest, at least, shouldn't Fnet = 0 since a = 0?

I investigated my Fnetx and Fnet y.
Fnetx = 0, then I have F - FgSin60 = 0
Fnety = 0, then I have Fg - Fgcos60 = 0

But it doesn't make sense because fg doesn't equal to Fgcos60

the answer for a) 34N and b) 39

please correct my approach, where have I gone wrong??

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anyone would like to give me a hand?

hage567
Homework Helper
I don't think you are interpreting the horizontal force correctly. It is not acting along the incline (so not parallel to it). It is at an angle with respect to the incline. You will need to break it up into its components, and put them into your equations. Don't forget about the normal force either, it is there too. Does that help at all? See what you can come up with.

Yes, a = 0, for both directions.

then shouldn't F means Fgsinx?
you know how, Fg|| or Fg |_ like fgsin and fgcos
i was stuck at breaking it