Question

Block A has a mass of m. It is lifted from point 1, placed on an icy platform with height h (point 2), and is pushed for 0.25 by a student until point 3 (the student has stopped exerting force after point 3, whereafter the block continues down a decline plane). Derive an equation for the force exerted on Block A by the student. Derive an equation for the work done by Block A between points 1-3.