Friction, Air Resistance, and Gravity

Key Concepts in Air Resistance and Gravity

Air Resistance and Speed Relationship Notes

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

Airway Resistance I Notes

Air and Air Pollution Notes

Air

air pollution

Electric Resistance, Ohm’s Law, and Resistor Networks

Air Pollution

AIR POLLUTION

Resistance Training Study Notes

Environmental Management and Atmospheric Air

DMM Resistance Checks

Air 5 Mars

Non-elastic source of resistance

Airway Resistance II Notes

Lung compliance and airway resistance

Air Pollution Notes