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Playground slides are found in parks, schools, playgrounds and backyards. The slide is an example of the simple machine known as the inclined plane, [1] [circular reference] which makes moving objects up and down easier, or in this case more fun. The slide may be flat, or half cylindrical or tubular to prevent falls.
An inclined plane, also known as a ramp, is a flat supporting surface tilted at an angle from the vertical direction, with one end higher than the other, used as an aid for raising or lowering a load. [1] [2] [3] The inclined plane is one of the six classical simple machines defined by Renaissance scientists. Inclined planes are used to move ...
On an inclined plane, a load can be pulled up the plane by a sideways input force, but if the plane is not too steep and there is enough friction between load and plane, when the input force is removed the load will remain motionless and will not slide down the plane, regardless of its weight.
1800 – Francis Henry Egerton (1756-1829), who became The 8th Earl of Bridgewater in 1823, wrote 'The Description of the Inclined Plane at Walkden Moor. [8] 1806–1828 Two inclined planes built on the Stollen Canal at Gliwice, Upper Silesia. [3] Inclined Plane 7 West on Morris Canal, showing flume, powerhouse, cabling, and track. The cradle ...
The blade is a compound inclined plane, consisting of two inclined planes placed so that the planes meet at one edge. When the edge where the two planes meet is pushed into a solid or fluid substance, it overcomes the resistance of materials to separate by transferring the force exerted against the material into two opposing forces normal to ...
In 2014, a United Airlines plane was forced to make an emergency landing in Wichita, after an evacuation slide inflated inside the cabin when the plane was almost 40,000ft over Kansas.
Sliding friction (also called kinetic friction) is a contact force that resists the sliding motion of two objects or an object and a surface. Sliding friction is almost always less than that of static friction; this is why it is easier to move an object once it starts moving rather than to get the object to begin moving from a rest position.
Hundreds of passengers were forced to evacuate on slides during a snowstorm after their Delta flight aborted takeoff from Atlanta due to an engine issue Friday morning, the airline said. Delta ...