Question

i need help on the second picture.

they did not give us a air drag coeffient

Physics 220 by David Michaels Lab 8 Instructor's Initials Activity 8.1 Score Potential to Work to Reach Great Heights Part I In this activity you are to use the same spring launcher or Nerfo gun you used in Lab 4 (check your Lab 4.1 for which one you used) to analyze energy conservation in various forms Let's assume the launching mechanism of the Nerfo launcher is similar to an ordinary spring. You are to determine the spring constant k of the spring in your launcher by using the principle of energy conservation. Use the launcher to shoot the bullet vertically. Measure the maximum height the bullet reaches, ymax, and the compression of the spring from its equilibrium, Δ ) Use energy conservation to find a mathematical expression to relate the height of the bal to the Hint: only two forms of energy are n n of the spring. you just measured when deciding how to set up your energy equation. b) Now solve your equations for the spring constant k (symbolically first), then plug in the values you have measured to determine k. c) How much work did the spring do on the bullet when it was launched from maximum com- pression? Hint: how does work relate to energy? d) Using your answer for work from above, determine the average force of the spring on the bullet. し、1078 Energy Forms Physics 220 Activity 8.1 Energy Tanks Potential to Work to Reach Great Heights e) Use your answer for the force from above to find the maximum force the spring gave the ball, then Ind the spring constant k using Hooke's Law. oarlier? is your value of k the same as you found Part II ajUse the initial launching speed v you found in Activity 4.1, or quickly recalculate the speed it has using projecble motion, by shooting it horizontaly b) Considering this initial speed v that it has at launch, how high should the bullet have gone in your vertical launch experiment from part 1? c) Considering your answer to the previous question, determine both the work from air drag on the bulet, and estimate the drag force on the bullet

Answer 1

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