):
an object pulled to the right by two forces has an acceleration of 2.5 m/s2. the free-body diagram shows the forces acting on the object.

what is the weight of the object?

The first thing we must do for this case is the sum of forces in a horizontal direction.

We have then:

Substituting values we have:

From here, we clear the mass of the object:

We now look for the weight of the object.

Where,

g: acceleration of gravity (9.8 m/s^2)

Substituting values:

the weight of the object is:

option 4

does anyone know or what?