1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Radda [10]
3 years ago
5

An airplane flies in a loop (a circular path in a vertical plane) of radius 200 m . The pilot's head always points toward the ce

nter of the loop. The speed of the airplane is not constant; the airplane goes slowest at the top of the loop and fastest at the bottom
(a) What is the speed of the airplane at the top of the loop, where the pilot feels weightless?
(b) What is the apparent weight of the pilot at the bottom of the loop, where the speed of the air-plane is 280 km/h? His true weight is 700 N.
Physics
1 answer:
Naya [18.7K]3 years ago
8 0

Answer:

Explanation:

a ) for the pilot to feel weightless , his weight will provide the centripetal force . The reaction force from airplane will be zero.

mg = mv² / r

g = v²/r

v² = gr

= 9.8 x 200

v = 44.27 m / s .

b )

v = 280 km / h

v = 77.77 m /s

If R be the reaction force of floor of airplane on him

R - mg = mv² / r

R = mg + m v² / r

= 700 + 70 x  77.77² / 200  ( m = mg / g = 700/ 10 = 70 )

= 700 + 2116.86

= 2816.86  N .

You might be interested in
How did Niels Bohr change the atomic model based on his experimental results?
Alexus [3.1K]

Answer: Find the answer in the explanation

Explanation:

Bohr postulated that :

1.) Electrons revolve in specific circular orbits around the nucleus and these orbits can be represented by the letters K, L, M, N.

2.) Electrons revolving in a particular orbit are in a stationary state. They can neither gain energy nor loose energy. 3.) But if an electron jumps from an higher orbit to a lower orbit it will emit energy in the form of radiations. Also if an electron jumps from lower orbit to a higher orbit it excites and absorbs energy in the form of radiations.

4.) Neil Bohr experimental findings about angular momentum of an electron shows more light on the stability of atom and the line spectrum of hydrogen atom

8 0
4 years ago
What are the general characteristics of a solid?
Arisa [49]
Fixed volume and shape
-Particles are locked into place
Not easily compressible
-Little free space between particles
Does not flow easy
-Particles cannot move past each other


4 0
3 years ago
Define1n force ? write down cgs unit of force​
Ghella [55]

Force is a vector, it has direction, it can move objects and it was well described with laws by physicist Isaac Newton by which the units of force were named Newtons (N).

Hope this helps.

r3t40

4 0
4 years ago
Read 2 more answers
Which set of terms is in the proper order, from left to right, for labeling the
Rufina [12.5K]
A. Base , salt , water,acid
3 0
3 years ago
Which type of galaxy has a central bar of stars instead of a rounded core?
Anastaziya [24]
Barred Spiral Galaxy
5 0
3 years ago
Other questions:
  • An ideal parallel-plate capacitor having circular plates of diameter D that are a distance d apart stores energy U when it is co
    8·1 answer
  • A roller coaster with a potential energy of 235,200 J sits at the top of a 30 m high hill. What is the mass of the roller coaste
    10·2 answers
  • What is the formula for electrostatic force?
    5·2 answers
  • Convection cell that occurs at the lowest latitudes is called what
    5·1 answer
  • a 10-N force is exerted on a box, moving it 20 m in the same direction. What is the magnitude of work done on the box?
    6·1 answer
  • Corbin, an avid skier leaves the horizontal end of a ramp with a velocity of 33.0 m/s and lands 63.0 m from the base the ramp. H
    7·1 answer
  • Which of the following best describes the human population from early times to the present?
    9·1 answer
  • Priscilla is driving her car on a busy street and Harvey passes her on his motorcycle. What will happen to the sound from his mo
    9·1 answer
  • What type of system is a black hole? Explain how you know.
    14·1 answer
  • two factors affecting the magnitude of force of gravity betwwn 2 objects are A. mass and matter B. mass and distance C. weight a
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!