Solve the all parts of following problem given below:
Problem: An 8.00kg package in a mail-sorting room slides 2.00m down a chute that is inclined at 53.0m below the horizontal. The coefficient of kinetic friction between the package and the chute's surface is 0.400.
Part I: Calculate the work done on the package by friction?
Part II: Calculate the work done on the package by gravity?
Part III: Calculate the work done on the package by the normal force?
Part IV: What is the net work done on the package?
I need help to find the work done on the package by the normal force.