A pilot with a mass of 50 kg comes out of a vertical dive in a circular arc such that at the bottom of the arc her upward acceleration is 3.5g. (a) How does the magnitude of the force exerted by the airplane seat on the pilot at the bottom of the arc compare to her weight? (What is the ratio of magnitude of the force exerted by the seat to the magnitude of the pilot's weight?) (b) Use Newton's laws of motion to explain why the pilot might be subject to a blackout. This means that an above normal volume of blood "pools" in her lower limbs. How would an inertial reference frame observer describe the cause of the blood pooling? (Do this on paper. Your instructor may ask you to turn in this work.) eBook

A pilot with a mass of 50 kg comes out of a vertical dive in a circular arc such that at the bottom of the arc her upward acceleration is 3.5g. (a) How does the magnitude of the force exerted by the airplane seat on the pilot at the bottom of the arc compare to her weight? (What is the ratio of magnitude of the force exerted by the seat to the magnitude of the pilot's weight?) (b) Use Newton's laws of motion to explain why the pilot might be subject to a blackout. This means that an above normal volume of blood "pools" in her lower limbs. How would an inertial reference frame observer describe the cause of the blood pooling? (Do this on paper. Your instructor may ask you to turn in this work.) eBook

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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A elevator accelerates upward in 3.2 s to a final speed of 7.2 m/s. Determine the apparent weight of a passenger with mass of 56 kg.
Because the Earth rotates about its axis, a point on the equator experiences a centripetal acceleration of 0.033 7 m/s2, whereas a point at the poles experiences no centripetal acceleration. If a person at the equator has a mass of 75.0 kg, calculate (a) the gravitational force (true weight) on the person and (b) the normal force (apparent weight) on the person. (c) Which force is greater? Assume the Earth is a uniform sphere and take g = 9.800 m/s2.
Two packing crates of masses m1 = 10.0 kg and m2 = 5.60 kg are connected by a light string that passes over a frictionless pulley as in the figure below. The 5.60-kg crate lies on a smooth incline of angle 41.0°. Find the following. (a) the acceleration of the 5.60-kg crate m/s2 (up the incline) (b) the tension in the string N
An 8 kg box is on an incline at 40 degrees from the horizontal. It is attached to a 10 kg box via a rope over a pulley that is on another incline of 50 degrees from the horizontal. Both inclines are frictionless. What is the acceleration of the system and what is the tension in the rope connecting the boxes. (Think of a triangle with one box on one side and the other box on the other side connected by a single rope over a pulley).
An astronaut on the moon places a package on a scale and finds its weight to be 35 N. (a) What would the weight of the package be on the earth? N(b) What is the mass of the package on the moon? kg(c) What is the package's mass on earth? kg
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Two small forces, F ⃗ 1 = −2.40i ^ − 6.10tj ^ N and F ⃗ 2 = 8.50i ^ − 9.70j ^ N, are exerted on a rogue asteroid by a pair of space tractors. (a) Find the net force. (b) What are the magnitude and direction of the net force? (c) If the mass of the asteroid is 125 kg, what acceleration does it experience (in vector form)? (d) What are the magnitude and direction of the acceleration?
A woman stands on a scale while riding in an elevator. When the elevator is at rest, the scale reads 60kg. What will be the reading of the scale in kg when the elevator accelerates. (a) upward at 1.2 m/s^2. (b) downward at 1.2 m/s^2. (c) At what acceleration of the elevator would the person appear to be weightless? Draw the FBD of the problem.
Because of Earth’s rotation about its axis, a point on the equator has a centripetal acceleration of 0.034 0 m/s2 , whereas a point at the poles has no centripetal acceleration. (a) Show that, at the equator, the gravitational force on an object (the object’s true weight) must exceed the object’s apparent weight. (b) What are the apparent weights of a 75.0-kg person at the equator and at the poles? (Assume Earth is a uniform sphere and take g 5 9.800 m/s2.)