[tristan2010]

An Airplane weighing 12000N is in a 30deg bank turn. The wings are producing 12000N of lift.
Compute the net forces along the vertical and horizon axis.
Compute vertical and horizontal accelerations

[Unknown008]

Have a quick sketch of what is happening to your airplane. Break down the forces into components parallel and perpendicular to the vertical and you'll get the net force by adding/subtracting the vectors, and from there, you can use F=ma to find the acceleration.

Post what you get! :)

[Unknown008]

EDIT: Sorry, didn't see your picture. Could you try avoiding using the comment button please and use the answer this question box? Thanks. I'm looking at what you've done now...

[tristan2010]

I don't know what to do from there. By getting the 6000N and 10392N I found vertical and horizontal components of lift... After that Im clueless =/

[Unknown008]

Ok, here's how I see the airplane:



The force is perpendicular to the wings, not along them. If the plane was horizontal, the lift should be vertical to allow it to rise.

Can you try it again?

[tristan2010]

Aha, mas mixing up two separate images I made, and good catch =]This would mean that my earlier note of vertic. And horiz. Components of lift are backwards, right?

[Unknown008]

Backwards? What do you mean by that? :confused:

Anyway, here's the vertical component:





Can now find the mass of the airplane, and get the acceleration? :)

And last thing, could you use the answer box instead of the comment button please? Thanks :)

[tristan2010]

The mass would be1224.5. But I just found mass by W=MG. I don't see how that fits in.

[Unknown008]

Yes, that's it :)

It's weight is 12000 N, so, it's mass is 12000/9.8 = 1224.5 kg

Now, use F = ma to get the acceleration in the direction of the resultant vectors.

You have one horizontal acceleration, and one vertical acceleration. Use the resultant force you got in (a).

[tristan2010]

Would the mass be opposite to the 12000N of lift?

[tristan2010]

Would the mass be opposite to the 12000N of lift?

[tristan2010]

And what does that have to do with the net force along the vertical and horizontal axis?

[Unknown008]

The mass is a scalar quantity and is not 'opposite' of anything (or I'm not understanding what you are saying here... )

The force on the horizontal is 6000 N, the mass of the plane is 1224.5 kg.

So,

6000 N = (1224.5 kg)(a)

Find the value of a, the horizontal acceleration of the plane.

Then, use the same formula for the vertical acceleration. :)

[tristan2010]

Thanks for all your help and patience =].

[Unknown008]

You're welcome :)