Question
Some runners train with parachutes that trail behind them to provide a large drag force. These parachutes are designed to have a large drag coefficient. One model expands to a square $1.8 \mathrm{m}$ on a side, with a drag coefficient of $1.4 .$ A runner completes a 200 m run at $5.0 \mathrm{m} / \mathrm{s}$ with this chute trailing behind. How much thermal energy is added to the air by the drag force?
Step 1
The parachute is modeled as a square with a side length of 1.8 m. The area of a square is given by the formula $A = s^2$, where $s$ is the side length. So, the area of the parachute is $A = (1.8 \, \text{m})^2 = 3.24 \, \text{m}^2$. Show more…
Show all steps
Your feedback will help us improve your experience
Laszlo Zalavari and 100 other Physics 101 Mechanics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Some runners train with parachutes that trail behind them to provide a large drag force. These parachutes are designed to have a large drag coefficient. One model expands to a square 1.8 m on a side, with a drag coefficient of 1.4. A runner completes a 240 m run at 5.0 m/s with this chute trailing behind. How much thermal energy is added to the air by the drag force?
Some runners train with parachutes that trail behind them to provide a large drag force. These parachutes are designed to have a large drag coefficient . One model expands to a square 1.8 m on a side , with a drag coefficient of 1.4. A runner completes a 240 m run at 6.0 m/s with this chute training behind.How much thermal energy is added to the air by the drag force?
A parachute of an open diameter of $4.4 \mathrm{~m}$. Determine the drag coefficient of the parachute if the terminal velocity as the man parachutes downward at the air temperature of $20^{\circ} \mathrm{C}$ is $10 \mathrm{~m} / \mathrm{s}$. The total mass of the parachute and man is $100 \mathrm{~kg}$. Neglect the drag on the man.
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD