Solution Found!
Solved: (a) How long would it take a 1.50×105 -kg airplane
Chapter 7, Problem 41(choose chapter or problem)
Problem 41PE
(a) How long would it take a 1.50×105 -kg airplane with engines that produce 100 MW of power to reach a speed of 250 m/s and an altitude of 12.0 km if air resistance were negligible? (b) If it actually takes 900 s, what is the power? (c) Given this power, what is the average force of air resistance if the airplane takes 1200 s? (Hint: You must find the distance the plane travels in 1200 s assuming constant acceleration.)
Questions & Answers
QUESTION:
Problem 41PE
(a) How long would it take a 1.50×105 -kg airplane with engines that produce 100 MW of power to reach a speed of 250 m/s and an altitude of 12.0 km if air resistance were negligible? (b) If it actually takes 900 s, what is the power? (c) Given this power, what is the average force of air resistance if the airplane takes 1200 s? (Hint: You must find the distance the plane travels in 1200 s assuming constant acceleration.)
ANSWER:
Problem 41PE
Solution 41 PE
Step 1:
In this question, we need to find time taken by airplane
In the second part , we need to find the power if time taken is
In the third part , with the power obtained in part two, we need to find average force of air
resistance if time taken is
Data given
Mass of airplane
Power
Final velocity
Height
Time taken
Time taken