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Why Objects reach Terminal Velocity: Physics Simplified

For the Love of Physics 6,595 lượt xem 4 years ago
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In ideal case, a falling object is supposed to accelerate at a constant rate of 9.8 m/s^2. However, in real life situations, the velocity of falling objects reach an upper limit known as Terminal speed or Terminal velocity. This is because, there is an external medium like air or other fluids that introduce a Drag Force that counteracts the gravitational attraction. Terminal velocity is reached when the Drag force becomes equal to the weight of the body.
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In this video, I solve the Force equation to obtain an expression of how velocity of falling object varies with time for two cases -
(i) Drag Force is directly proportional to velocity
(ii) Drag Force is directly proportional to velocity squared

00:00 Introduction
03:15 Drag Force proportional to v
11:24 Drag Force proportional to v-squared

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1. The Simple Pendulum is not so Simple - https://youtu.be/v-yEApxAKsE
2. The Chaos of the Double Pendulum - https://youtu.be/aTMJX1ZgMB0
3. The Double Pendulum as Coupled Oscillator - https://youtu.be/0yQV1lE8jys
4. The Coupled Pendulum (Normal Modes) - https://youtu.be/M-hLBxx7MeE
5. Coupled Oscillators (Normal Modes/ Frequencies) https://youtu.be/4WhrNjg3I_o
6. Damped Harmonic Oscillators - https://youtu.be/8AHQ6gBSxAU
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7. What if you fell through a TUNNEL through Earth - https://youtu.be/GMgFkqzpRWQ
8. BLOCK Stacking Problem (Very Interesting) - https://youtu.be/Ebmxq52WnZk
9. Terminal Velocity (Force Equations) - https://youtu.be/j0pL486fDH0
10. WELL OF DEATH - Physics Problem - https://youtu.be/L5yislIOui8
11. Fermat's Principle to Snell's Law - https://youtu.be/3Etj75qzGg0
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PLAYLIST on Various Problems on MECHANICS
https://youtube.com/playlist?list=PLRN3HroZGu2l3ynmm_5gtgRGj3AAgSTTb


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