A box of mass 6.2KG stands on the floor of a lift which is moving with an upward acceleration of 0.2ms^-2. A horizontal force of magnitude 16N acts on the box. There is no horizontal movement of the box. Find the magnitude and direction of the resultant of the forces, normal and frictional, exerted by the floor on the box. i had a url but it wont let me say them without 15 posts so i cant show you what i've done already.