You are riding a ferris wheel at the state fair. The wheel has a radius of 10 meters and takes 30 seconds to complete one revolution. What is your apparent weight at the top and bottom of the circular motion? Of course the first thing to look at in this question is "apparent weight. If you want to understand apparent weight, you need to consider regular weight: the gravitational force between the Earth usually and an object.
This weight depends on the mass of the Earth fixed , the mass of the object, and the distance between the center of the Earth and the object which is probably the radius of the Earth.
Since the mass and radius of the Earth don't really change, we can combine these two things to get the following expression for the magnitude of weight. Where g is the value of the gravitational field with a value of approximately 9. This gravitational field and thus the weight of an object is essentially constant—even if you move further from the surface of the Earth like on the top of a mountain.
But here's the weird thing about weight—we humans don't really feel the gravitational force. Since the gravitational force pulls on all parts of our bodies, we don't really detect it. Instead, we feel the force of stuff pushing against gravity—like a chair or the floor.
We call this force of a surface pushing on an object the "normal force" since it's perpendicular to the surface normal means perpendicular.
For a human sitting in a chair which you might be doing right now , the normal force pushing up is equal to the weight pulling down. The net force on an object is equal to the product of the object's mass and acceleration. If the object is at equilibrium with a zero acceleration, the total force must also be zero such that the chair and the weight are equal. But what if you just took away the chair? That would be a mean trick—but useful for physics. Without a supporting chair, a human would accelerate downward with only the gravitational force.
How would you feel? You would feel silly for falling down, but you would also feel weightless for that tiny moment of time as you travel to the floor.
Yes, you would feel weightless but you would not be weightless. The exact same thing happens to astronauts in orbit around the Earth. They are not actually "weightless," they just feel that way because they are accelerating. Here is a full explanation if you want it. OK, now back to the Ferris wheel. Why would the apparent weight change as you move from the top to the bottom of the ride? The answer is: acceleration. Acceleration is defined as the rate of change of the velocity.
However, both velocity and acceleration are vectors such that it should be written as:. Since the acceleration depends on the change in velocity and since the velocity is a vector, an object can have an acceleration just by changing the direction of the velocity and not the magnitude.
Here are two velocity vectors for a moving object at different times to show this point. Just moving in a circular motion constantly changing direction but traveling at the same speed magnitude of velocity would be an accelerated motion. This is how does a ferris wheel work. Usually when you at the tops of ferris wheel, you will feel lighter while when you at the bottom of a ferris wheel, you will feel heavier.
This is caused by centripetal acceleration. Here Beston will show you more about this: First of all, you need to know that ferris wheel rides are large, non-building structures which rotate around a central axis. This large, non-building structure will use gears and motors for upward motion of the wheel, and then the gravity will pull it downwards.
In every Ferris wheel design, the primary importance is provided to the safety and smooth operation of the ride. The hydraulics in the Ferris wheel will provide high power density and a tremendous amount of torque.
Compact design, low heat generation, and ease of maintenance are other advantages for choosing hydraulics in Ferris wheel. Also, smooth acceleration and deceleration of the system can only be achieved with hydraulics. How do hydraulics make the Ferris wheel rotate? In Ferris Wheel, it is the hydraulic motor powered by an electric pump that makes the Ferris wheel work. In the Ferris wheel design, it contains truck tires along the rim and it rotates on its axis with the power of a hydraulic motor and gearboxes.
Two popular Ferris wheel rides and its hydraulic working are discussed in this article. The London Eye located on the bank of the River Thames, near Jubilee Gardens was first built in and it is feet meters tall and has a circumference of feet meters. This Ferris wheel ride contains 32 capsules, numbered 1 to 12 and 14 to The London Eye contains a steel frame structure with two tapered legs at the base that forms an "A" shape.
The attached cable backstays will protect the frame from tilting. The London Eye Ferris Wheel contains two drive system located near the boarding platform of each tower. The hydraulic motor powered by an electric pump will make the standard truck tires placed along the rim to rotate at a constant speed. The speed of the Ferris wheel can be adjusted with computer controls. It is the hydraulic lifts and cables that help to lift heavy loads effectively.
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