Simple Forces

[Help_Me_Please]

A box weighs 2000N and is accelerated uniformly over a horizontal surface at a rate of 8 m/s^2. The opposing force of friction between the box and the surface is 27.4 ..

How much force would be required to lift the box upward with an acceleration of 8 m/s^2?

I know that the answer is 3,630N .. but I'm not sure how to get there?

[Sirus]

Some of the information in the question doesn't relate to the problem, but anyways, this is an application of F_{net}=ma. You know mass and acceleration, now what is the net force acting on the object while it is moved upward? Develop the equation and solve for applied force.

[Doc Al]

How much force would be required to lift the box upward with an acceleration of 8 m/s^2?

What forces act on the box when you lift it? Set the net force equal to ma (Newton's 2nd law).

[Help_Me_Please]

Ok got it =D thankyou