The free body diagram of the forces acting on the 30 kg block is shown in the image attached.
How to draw the free body diagram of the forces on the block?
The free body diagram of the forces acting on the block consists of the following;
the normal force on the block acting upwards due to its weight
the weight of the block acting downwards
the force applied to the block acting parallel to the plane
the perpendicular and parallel component of the blocks weight
the force of friction acting downwards opposing the applied force
The force diagram is in the image attached.