I updated my previous post. Here is the Causeway portion.
The linear force along the ramp changes for BOTH weights proportionally as you change the angle. This means that the ratio of the linear forces generate by each weight remains the same.
A 1 ton weight generates about 160 lb of linear force on a 4.6 degree ramp.
A 0.25 ton weight generates about 40 lb of linear force on that 4.6 degree ramp.
The ratio is 160/40 = 4, just as it is for the ratio of the gross weights.
The same 1 ton weight generates about 347 lb on a 10 degree ramp.
The same 0.25 ton weight generates about 87 lb on that 10 degree ramp.
The ratio is 347/87 = 4, just as it was with the other angle.
So changing the angle lessens the linear forces generated by BOTH weights proportionally.