Editing Inclined plane (section)

==Uses==
Inclined planes are widely used in the form of ''loading ramps'' to load and unload goods on trucks, ships and planes.<ref name="Edinformatics" /> [[Wheelchair ramp]]s are used to allow people in [[wheelchair]]s to get over vertical obstacles without exceeding their strength. [[Escalator]]s and slanted [[conveyor belt]]s are also forms of an inclined plane.<ref name="TeachEngineering" />In a [[funicular]] or [[cable railway]] a railroad car is pulled up a steep inclined plane using cables. Inclined planes also allow heavy fragile objects, including humans, to be safely lowered down a vertical distance by using the [[normal force]] of the plane to reduce the [[gravitational force]]. Aircraft [[Evacuation slide|evacuation slides]] allow people to rapidly and safely reach the ground from the height of a passenger [[airliner]].
{{multiple image
| align = center
| footer = 
| image1   =2008-08-11 Unloading a VW New Beetle 1.jpg
| caption1 = Using ramps to load a car on a truck
| width1   = 151
| image2   = Bulgarian Excavator on KrAZ-truck.jpg
| caption2 = Loading a truck on a ship using a ramp
| width2   = 143
| image3   = Emergency exit slide.jpg
| caption3 = Aircraft emergency [[evacuation slide]]
| width3   = 154
| image4   = Slope for Wheelchairs in omnibus.jpg
| caption4 = [[Wheelchair ramp]] on Japanese bus
| width4   = 134
| image5   =PenskeRamp.jpg
| caption5 = Loading ramp on a truck
| width5   = 271
}}
Other inclined planes are built into permanent structures.  Roads for vehicles and railroads have inclined planes in the form of gradual slopes, ramps, and [[causeway]]s to allow vehicles to surmount vertical obstacles such as hills without losing traction on the road surface.<ref name="Edinformatics" />   Similarly, pedestrian paths and [[sidewalk]]s have gentle ramps to limit their slope, to ensure that pedestrians can keep traction.<ref name="Cole"/><ref name="Silverman" /> Inclined planes are also used as entertainment for people to slide down in a controlled way, in [[playground slide]]s, [[water slide]]s, [[ski slope]]s and [[skateboard park]]s.
{{multiple image
| align = center
| footer = 
| image1   =Vista general de Masada.jpg
| caption1 = Earth ramp ''(right)'' built by Romans in 72 AD to invade [[Masada]], Israel
| width1   = 169
| image2   =  Planalto do Planalto Entrance.jpg
| caption2 =  Pedestrian ramp, Palacio do Planalto, Brasilia
| width2   = 188
| image3   = JohnstownIncline.jpg
| caption3 = [[Johnstown Inclined Plane]], a [[funicular]] railroad.
| width3   = 172
| image4   = Ledo Burma Roads Assam-Burma-China.gif
| caption4 = [[Burma Road]], Assam, India, through Burma to China, {{c.|1945}}
| width4   = 104
| image5   =Rollin1.jpg
| caption5 = Inclined planes in a skateboard park
| width5   = 192

}}