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Gnit Sunday Open 002 (GSO002) | Gnit
All Contests
Gnit Sunday Open 002 (GSO002)
Finished
Time limit: 90 minutes. This is an individual contest.
OK to use
: Calculators, scratch paper.
Not allowed
: AI tools, Web search, Textbooks, or talking with others.
Cheating will make your score invalid.
Note
: The calculations are complex.
Please use a calculator
.
2026/03/22 19:30
〜
2026/03/22 21:00
Unrated
Scoreboard
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問題6の問題訂正
以下のように修正してください。コンテストのスコア計算等に影響はしません。 誤：[\mathrm{J}] 正：[J]
3/24/2026, 4:46:31 AM
Problems
1
The Ultimate Drip Coffee: Energy Path to the Ideal Brewing Temperature
100
pts
2
Sponge Quality Inspection: Measuring Maximum Pressure with a Rectangular Block
100
pts
3
Precision Spring Scale for Pharmacy Use
100
pts
4
Stamp Collector and the Secret Microprint: Magnification by a Convex Lens
100
pts
5
Impact Force of an Ultra-High-Speed Water Jet Cutter
200
pts
6
First Law of Thermodynamics in a Bicycle Pump (Compression Before Valve Opens)
200
pts
7
Pull-In Effect Analysis in a MEMS Actuator
200
pts
8
Wheatstone Bridge for a Resistance Temperature Detector with Self-Heating Error
200
pts
9
Magnetic Confinement Fusion: Mass Defect and Particle Motion
300
pts
10
Melting of Ice with Inclusions and Liquid Level Change
300
pts
11
Interference Fringe Shift from Buoyancy and Elastic Support
300
pts
12
Minimum Gap of a Movable Plate Against Non-Linear Electrostatic Force
300
pts
13
Watt Governor: Non-Linear Small Oscillations in a Rotating System
400
pts
14
Drag Force on a Flat Plate Moving Through a Rarefied Gas
400
pts
15
Magnetic Energy Transition in Electromagnetic Induction Coupled with LC Resonance
500
pts
16
Center-of-Mass Frame 2D Harmonic Oscillation: Trajectory of a Puck Under Special Attractive Force
500
pts
17
Energy Distribution in String Vibration via Fourier Series
400
pts
18
Secular Equation and Product of Eigenvalues for Spin $S=2$ System in Non-Axisymmetric Crystal Field
400
pts
19
Free Rotation of a Rigid Body and Flip Period of the Dzhanibekov Effect
500
pts
20
Optical Tweezer Manipulation of a Polar Nanoparticle: Interaction with Mirror Dipole of Grounded Conducting Sphere
500
pts