Can anyone help me with a science-related question? - ramp builders
In mountainous regions, road builders in the construction of ramps, control of a truck near the bottom of the long hill. These ramps allow a truck with no, no (working title), the brakes on the main road and along the coast to a stop on the sand or gravel-filled streets to stop. Explain why the sand or gravel will help to stop the car. (Hint: Think about it, on a sandy beach.)
Friday, January 8, 2010
Ramp Builders Can Anyone Help Me With A Science-related Question?
3 comments:
First truck ramps are inclined to get out of the mountains slowly, using gravity for the truck. Then sand or gravel, because it used less compact soft matter.
What happens is that the wheels of the vehicle begins to dig in the sand or gravel, when you reach the escape ramp. The deeper the search in the tires provides (Metzger) sand or gravel, a higher resistance to sand and gravel trucks to pass the motion. In the form of the coefficient of fraction. The tires deeper into the sand or gravel, the higher the ratio of the group. and that, together with the force of gravity causes the truck to slow down gradually, without spoiling.
When the truck goes fast enough in deep sand or gravel stalled when the truck is a depression in the sand or gravel accelerates the recovery of the coefficient of fraction.
Valley is a term that is frequently used by vehicles, was buried in mud, sand or gravel so deeply that the bottom will pull the vehicle to the ground.
The sand or gravel, and occur more resistance to the dynamics of the car, especially the wheels start to get bogged down in soft matter. It will make the truck much faster than the hard Left, packing flat surface like a paved road.
Sand or gravel, the wheels sink into the soft path. The sinking increases the contact area between the road and tires, which increases the friction. Friction is easier to stop.
The tracks are too idea. In addition, the road from the wheel slip and spin in place and not in the other direction.
In a sense, it also reduces the friction at the base of the tires while the increase of the friction at the sides. This allows the vehicle to lose "traction and are driven by gravity to help slow decelleration.
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