Friction, Air Resistance, and Gravity

Key Concepts in Air Resistance and Gravity

Air Resistance and Speed Relationship Notes

Air Resistance, Atmospheric Pressure, and Rotational Motion

Air Resistance, Pressure, and Rotational Motion Summary

Kinematics

5. Helicopter Forces Given: Weight W = 53 , 800 W=53,800 N Lift force L L at 21 ∘ 21 ∘ from vertical Constant horizontal velocity → equilibrium (a) Free Body Diagram Lift L L at 21 ∘ 21 ∘ Weight W = 53 , 800 W=53,800 N downward Air resistance R R horizontally left (b) Find Lift Force L L Vertical equilibrium: L y = W L y ​ =W L cos ⁡ 21 ∘ = 53 , 800 Lcos21 ∘ =53,800 L = 53 , 800 cos ⁡ 21 ∘ = 53 , 800 0.9336 = 57 , 647  N L= cos21 ∘ 53,800 ​ = 0.9336 53,800 ​ =57,647 N (c) Find Air Resistance R R R = L sin ⁡ 21 ∘ = 57 , 647 × 0.3584 = 20 , 670  N R=Lsin21 ∘ =57,647×0.3584=20,670 N Final Answer: Lift = 57,647 N Air Resistance = 20,670 N 5. Helicopter Forces Given: Weight W = 53 , 800 W=53,800 N Lift force L L at 21 ∘ 21 ∘ from vertical Constant horizontal velocity → equilibrium (a) Free Body Diagram Lift L L at 21 ∘ 21 ∘ Weight W = 53 , 800 W=53,800 N downward Air resistance R R horizontally left (b) Find Lift Force L L Vertical equilibrium: L y = W L y ​ =W L cos ⁡ 21 ∘ = 53 , 800 Lcos21 ∘ =53,800 L = 53 , 800 cos ⁡ 21 ∘ = 53 , 800 0.9336 = 57 , 647  N L= cos21 ∘ 53,800 ​ = 0.9336 53,800 ​ =57,647 N (c) Find Air Resistance R R R = L sin ⁡ 21 ∘ = 57 , 647 × 0.3584 = 20 , 670  N R=Lsin21 ∘ =57,647×0.3584=20,670 N Final Answer: Lift = 57,647 N Air Resistance = 20,670 N

Fluid Resistance and Terminal Velocity Notes

Principles of Driving and Resistive Forces

Air and Air Pollution Notes

Dynamics: Newton’s Laws of Motion, Free-Body Diagrams, and Resistive Forces

Air

Atmospheric Stability and Air Quality Measurement Principles of Air Pollution Measurement

air pollution

Heat Transfer & Thermal Resistance Concept

Electric Resistance, Ohm’s Law, and Resistor Networks

Airway Resistance II

Airway Resistance I

Resistance Training Study Notes

Air Pollution