It would be increased because the loss due to friction would be reduced.
screw,ax slide are ramps - Eljana
Gravity.
i would assume that an incline plane is most commonly used as ramps, if this is for an essay, you could give examples, (bridge, hills etc.)
They are very useful. Ramps were made to make things easier by spreading the effort over a longer distnace. Say that you were trying to get over a brick wall which was about you height and you were in a wheel chair. Instead of using tones of effort to get over the wall, you could build a ramp and use small effort over a longer distance. The longer the ramp, the less effort but more time. The shorter the ramp, more effort but less time. They are classified as simple machines and as inclined plains.
Examples are ramps, such as those used by movers carrying heavy objects out of a moving truck, or a sloped road or hill, or even a windshield, funnel, or slide that have two ends of opposite height
The answer is : Increase because friction would decrease.
If these ramps are the same gradient and length then in theory it should be the metal as its surface is smoother so there is less friction
a ramp is a flat surface which
In incline happens when a flat surface is higher at one end making it a slanted surface. Examples of inclines include wedges and ramps.
A simple machine that consists of a flat surface set at an angle to a horizontal surface is known as a ramp. Ramps make it easier to move heavy objects on wheels up or down levels.
"Portable ramps are most beneficial to people in a wheelchair, because a lot of places do not have wheelchair ramps installed." People in wheelchairs will take portable ramps with them to be able to enter older buildings that are without wheelchair ramps.
Wheelchair ramps, ramps up parking garages
Skiing ,snowboarding, skateboarding, etc are the examples of ramps.
in ramps and driveways.
You can get blackriver ramps in the US online on flatfacefingerboards.com
screw,ax slide are ramps - Eljana
Discountramps.com is a website where you can purchase truck loading ramps online. They offer a wide variety of ramps to choose from.