Problem with object moving up an incline.

[pokeefer]

Homework Statement

A box of mass 96 kg is pushed up an inclined plane which makes an angle of 21 degrees with the horizontal. The box moves at a steady speed of 3.2 m/s.

(a) What force, parallel to the plane, is being applied? (4 marks)

(b) What horizontal force is require to produce the same results? (2 marks)

Homework Equations

I can't name any off the top of my head.

The Attempt at a Solution

I'm having some trouble understanding mostly Part A of this question. What does it mean by parallel to the plane? Is it like the force of friction or gravity?

 

[rock.freak667]

The weight acts vertically downwards. You want to resolve this weight into two components, one parallel to the plane and one vertical to the plane.

Link

 

[iRaid]

The force of friction is parallel to the plane..