Drop Definition and 876 Threads

A drop tower or big drop is a type of amusement ride incorporating a central structure or tower. Drop towers vary in height, passenger capacity, lift type, and brake type. Many are custom-made, although there are some mass-produced designs. Riders experience free-fall initially, followed by rapid heavy deceleration.
With most drop towers, a gondola carrying riders is lifted to the top of a large vertical structure, then released to free-fall down the tower. Brakes slow the gondola as it approaches the bottom of the ride. Some designs expand on this concept with features such as rotating gondolas, or several bounces before coming to rest.
Most drop towers require child riders to exceed a minimum height; limits vary widely depending upon the nature of the tower, with a 9-metre (30 ft) tower for smaller children from 95 centimetres (37 in) tall, and a 35-metre (115 ft) tower having a 130-centimetre (51 in) restriction.Drop towers use a magnetic braking system to slow the carriage quickly and smoothly once it reaches the bottom of the tower. This system is fail-safe because magnets do not need to be powered by electricity or other sources; they work intrinsically by the laws of magnetism.

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  1. K

    Calculating Pressure Drop with Displacement Thickness

    Question In flow over a flat plate, how to calculate pressure drop by knowing displacement thickness values at 2 points. Free stream velocity is known.
  2. R

    Calculating Separation Increase: 2000km Space Drop

    There is a spaceship in low-earth orbit, at 2000km above the surface of the earth. There are two balls in the spaceship that are dropped. The balls are 1m apart. How long will it take for their separation to increase to 1.01m? Assume that one ball is at 2000km, and the other is at 2000km+1m...
  3. L

    Why Multiply by sqrt(3) in Voltage Drop Formula?

    I have a 45kW VSD drive with pf of .9 and FL amp of 75A, I have a 350m run from the MCC to the VSD itself and I'm trying to calculate what size cable I need so that I don't exceed the specified voltage drop of 3%. The line-line voltage where the motor is to be placed is 400V and the cable...
  4. C

    Change in potential energy on a roller coaster drop (frictionless)

    800 kg roller coaster is initially at the top of a rise, at point A. It then moves 125 ft (38.1 m), at an angle of 40.0° below the horizontal, to a lower point, B. (a) Choose point B to be the zero level for gravitational potential energy. Find the potential energy of the roller coaster-Earth...
  5. P

    Tennis Ball Drop II: Find Force Exerted on Floor

    Homework Statement A 0.5 kg tennis ball is dropped from rest at a height of 5.6 m onto a hard floor. A flash photograph shows that the ball is compressed a maximum of 0.6 cm when it strikes the floor. b) Assuming that the acceleration of the ball is constant during its contact with the...
  6. P

    Solve Tennis Ball Drop: 0.5kg at 5.6m Height

    Homework Statement A 0.5 kg tennis ball is dropped from rest at a height of 5.6 m onto a hard floor. Homework Equations a) What is the speed of the ball at the instant of contact with the floor? v = m/s The Attempt at a Solution I need acceleration and I have attempted using...
  7. W

    Courses Feeling Overwhelmed with Course Load: Should I Drop a Class?

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  8. C

    Disintegration of a falling drop of liquid

    What are the variables that determine the maximum diameter of a drop of liquid that will not disintegrate while falling through a gas (e.g. raindrop falling in air)?
  9. L

    Ball Drop Question: How High Will It Go?

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  10. K

    Elevator going down and you drop a book

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  11. B

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    The max radius a fallling liquid drop can have without breaking apart is given by the equation: R=√(σ/gρ) where the rho is density of liquid (1000kg/m^3), and the surface tension is .7275J/m^2. g is gravity I am asked to determine the max radius of a drop in units of cm at 20...
  12. A

    When flowing fluid passes through throttling there is a drop in

    when flowing fluid passes through throttling there is a drop in pressure and also there's a drop in temperature why?can anyone help??
  13. A

    Ball Drop Problem: Find Initial Velocity

    A ball is thrown straight up from the edge of the roof of a building. A second ball is dropped from the roof 2.00 s later. Air resistance may be ignored. (a) If the height of the building is 60 m, what must be the initial speed of the first ball if both are to hit the ground at the same...
  14. A

    Ball Drop Problem: Solving the Dual Impact Challenge

    This problem has really been bugging me. After several attempts, I don't even know where to start anymore. A ball is thrown straight up from the edge of the roof of a building. A second ball is dropped from the roof 2.00 s later. Air resistance may be ignored. (a) If the height of the...
  15. W

    How Does an MZI Add Drop Function with Bragg Gratings Work?

    helo. I came across this mzi add drop function/device and need some help to to fully understand it. I attached a picture which shows the thing. ---- Ok so, the first 50/50 coupler splits the intensities to the 2 arms with the bragg gratings, bragg gratings are adjusted(made) so that...
  16. X

    Help Voltage drop is driving me insane

    Help! Voltage drop is driving me insane! 1. If the Voltage Drop across a load increases due to its added resistance, what happens to the voltage drop across other segments on the circuit? 2 Why does resistance decrease Voltage (create voltage drop) if the Voltage is a Force "APPLIED" to the...
  17. R

    Pressure drop in pipes and Velocity

    For pipes head loss causes pressure drop. If there is lower pressure at the end of the pipe, is the velocity lower? What I'm trying to figure out is if the average velocity in the pipe is constant. And how does it change if you place an object inside the pipe? Does velocity only change with a...
  18. S

    How Can I Accurately Measure Voltage Drop across a Capacitor?

    Hi all, Here's the problem! I am attempting to create a leakage current test suite. Basically it centers around cutting the voltage reference supply to a capacitor and measuring the voltage drop. Similar to the one in the attachment. I figured that to determine the drop it would be a...
  19. S

    Quantum particle reflection from a potential drop

    Homework Statement A quantum mechanical particle with mass m and energy E approaches a potential drop from the -x region, where the potential is described by: V(x)=\left\{\stackrel{0 textrm{if} x\leq 0}{-V_0 textrm{if} x> 0}. What is the probability it will be reflected by the potential...
  20. W

    Pressure Drop & Flow Rate for Oxygen Delivery Tube

    I am on home oxygen and receive the gas through a 50feet long tube about .1" inside diameter.If the Machine delivers a flow rate of two liters per second, what is the pressure drop through the tubing; What is the flow rate at my end of the tubing?
  21. L

    How Does Cable Size Affect Voltage Drop in Three-Phase Systems?

    I was just looking for some insight on this problem. It is not a homework problem, my boss just asked me to figure it out. Now, there is 120V supply, with 600 feet of cable (copper) running to a load, and 600 ft neutral coming back to the supply. Ignoring the resistance of the load, he asked...
  22. M

    Why Does the Torque Curve Drop Off at Low RPM in a Typical Piston Engine?

    I’ve been searching for an answer to this question on the web for 3 hours. Thought I would find it quickly, but, noooooo. I’m trying to understand why crankshaft torque falls off at low RPM in normally aspirated piston engines. I think I understand the high end of the torque curve OK. At...
  23. I

    Calculating Voltage Drop in a 6V Circuit with 18 Gauge Copper Wire

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  24. F

    Why must voltage drop across a resistive circuit?

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  25. M

    How far will this bullet drop in 3 seconds

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  26. W

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  27. S

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  28. S

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  29. L

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  30. M

    Checking Voltage Drop while Supplying 6A Current

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  31. marcus

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  32. E

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  33. S

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  34. R

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  35. S

    Voltage Drop & RE in NPN Transistors

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  36. Y

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  37. J

    How Can Load Cell Readings Translate to Energy Values in Drop Test Experiments?

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  38. S

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  39. E

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  40. wolram

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  41. A

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  42. R

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  43. B

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  44. S

    How Can You Protect an Egg in a Physics Experiment with Strict Guidelines?

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  45. J

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  46. R

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  47. W

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  48. Y

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  49. S

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  50. M

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