Moving along a horizontal surface (no friction)

[inv4lid]

At a force of 40N, the body moves along a horizontal surface with an acceleration of 2m/s^2 and under the action of 50N with an acceleration of 3m/s^2. What is the mass of the body?

F1 = 40N
a1 = 2m/s^2
F2 = 50N
a2 = 3m/s^2
_____________
m=?
2. Homework Equations
As there's no vertical acceleration, we probably don't have to deal with gravity nor N. The only thing i managed to get is N = -G which is somehow useless.

The Attempt at a Solution

No idea how to get the mass, can anyone help me?

 

[Bystander]

You are certain you have included all information from the problem statement?

 

[inv4lid]

Yes

 

[Bystander]

Look again, please.

 

[RedDelicious]

If you're going to ask for help, you need to include the problem exactly as it was stated. Where did you get that it's a frictionless surface as you put in the title?

 

[inv4lid]

Look again, please.

I have included all information, absolutely

 

[inv4lid]

If you're going to ask for help, you need to include the problem exactly as it was stated. Where did you get that it's a frictionless surface as you put in the title?

We haven't learned friction at movement yet
The chapter the problem belongs to is "second law of Newton"

 

[haruspex]

The relevant equation is ΣF=ma. You surely have met that one. Perhaps you know it as F_net=ma, which is the same thing.
If there is no friction then F_net is easy, but now the question is giving you inconsistent data. The only thing that makes sense is that there is friction.
Take the frictional force to be the same in both cases.

 

[CWatters]

+1

Mass and friction are unknown. If you have two unknowns you will need two equations. Fortunately the problem statement gives you two sets of data points. So not only can you calculate the mass but you can also calculate the friction force that exist.