Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
33.3k views
in Physics by (54.6k points)

A plane is in level flight at constant speed and each of its two wings has an area of 25 m2 . If the speed of the air is 180 km/h over the lower wing and 234 km/h over the upper wing surface, determine the plane’s mass. (Take air density to be 1 kg m–3 ).

1 Answer

0 votes
by (89.9k points)
selected by
 
Best answer

The area of the wings of the plane, A = 2 × 25 = 50 m2 

Speed of air over the lower wing, V1 = 180 km/h = 50 m/s Speed of air over the upper 

wing, V2 = 234 km/h = 65 m/s

The upward force on the plane can be obtained using Bernoulli’s equation as:

The upward force (F) on the plane can be calculated as:

(P1 - P2)A

Using Newton’s force equation, we can obtain the mass (m) of the plane as:

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...