Processing Math: Done

From Mechanics

In the figure R1 is the air resistance.

Resolving up the plane

F1+F−mgsin20=0F1=mgsin20−F=609.810.342−F=201.3 N−F

Resolving perpendicular to the plane upwards

R−mgcos20=0R=mgcos20=609.810.94=553 N

Using the friction equation gives

F=R=0.05553=27.65 N

Substituting in the above equation for R1 gives

F1=201.3−27.65173 N