14. A pilot is flying a vintage war plane in a vertical "loop the loop" path. At the bottom of the loop, the plane is travelling with a speed of 180 km/h. The pilot is sitting on a set of bathroom scales and notes that they read 4 times the normal force of gravity. a) What is the radius of the loop? b) What will the bathroom scales read when the plane and pilot is at the top of the loop? [85 m] [twice Fg]
Gravitational force
In nature, every object is attracted by every other object. This phenomenon is called gravity. The force associated with gravity is called gravitational force. The gravitational force is the weakest force that exists in nature. The gravitational force is always attractive.
Acceleration Due to Gravity
In fundamental physics, gravity or gravitational force is the universal attractive force acting between all the matters that exist or exhibit. It is the weakest known force. Therefore no internal changes in an object occurs due to this force. On the other hand, it has control over the trajectories of bodies in the solar system and in the universe due to its vast scope and universal action. The free fall of objects on Earth and the motions of celestial bodies, according to Newton, are both determined by the same force. It was Newton who put forward that the moon is held by a strong attractive force exerted by the Earth which makes it revolve in a straight line. He was sure that this force is similar to the downward force which Earth exerts on all the objects on it.
![14. A pilot is flying a vintage war plane in a vertical "loop the loop" path. At the bottom of the loop, the
plane is travelling with a speed of 180 km/h. The pilot is sitting on a set of bathroom scales and
notes that they read 4 times the normal force of gravity.
a) What is the radius of the loop?
b) What will the bathroom scales read when the plane and pilot is at the top of the loop?
[85 m]
[twice Fg]
Two wires are tied to the 300 g sphere shown below. The sphere revolves in a horizontal circle at a
constant speed of 7.5 m/s. What is the tension in each of the wires?
1.0 m
0.50 m
0.50 m
1.0 m](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fda7972fa-e7a7-402b-8ead-c406a2c81728%2F07101384-3e8f-472d-a06f-71c0f36bd9ad%2F3ebp6tz_processed.jpeg&w=3840&q=75)
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