The drawing shows a bicycle wheel resting against a small step whose height is h = 0.120 m. The weight and radius of the wheel are W = 25.0 N and r= 0.340 m, respectively. A horizontal force F is applied to the axle of the wheel. Neglect friction forces. (a) Draw the free-body diagram showing the forces that act on the wheel. (b) As the magnitude of F increases, there comes a time when the wheel just begins to rise up and loses contact with the ground. What is the magnitude of the force when this happens? F

The drawing shows a bicycle wheel resting against a small step whose height is h = 0.120 m. The weight and radius of the wheel are W = 25.0 N and r= 0.340 m, respectively. A horizontal force F is applied to the axle of the wheel. Neglect friction forces. (a) Draw the free-body diagram showing the forces that act on the wheel. (b) As the magnitude of F increases, there comes a time when the wheel just begins to rise up and loses contact with the ground. What is the magnitude of the force when this happens? F

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter10: Rotational Motion

Section: Chapter Questions

Problem 9OQ: As shown in Figure OQ10.9, a cord is wrapped onto a cylindrical reel mounted on a fixed,...

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As shown in Figure OQ10.9, a cord is wrapped onto a cylindrical reel mounted on a fixed, frictionless, horizontal axle. When does the reel have a greater magnitude of angular acceleration? (a) When the cord is pulled down with a constant force of 50 N. (b) When an object of weight 50 N is hung from the cord and released. (c) The angular accelerations in parts (a) and (b) are equal. (d) It is impossible to determine. Figure OQ10.9
The figure shows a bicycle wheel resting against a small step whose height is h = 0.130 m. The weight and radius of the wheel are W = 16.0 N and r = 0.340 m. A horizontal force is applied to the axle of the wheel. As the magnitude of increases, there comes a time when the wheel just begins to rise up and loses contact with the ground. What is the magnitude of the force when this happens?
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In the figure, what magnitude of force F→ applied horizontally at the axle of the wheel is necessary to raise the wheel over an obstacle of height h = 0.284 m? The wheel's radius is r = 0.685 m and its mass is m = 1.50 kg.
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In unit-vector notation, what is the net torque about the origin on a flea located at coordinates (0,4.0 m) when forces F1= (3.0N)k̂ and F2 = (−2.0N)ĵ act on the flea?
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The uniform ladder of length 1.8 m and mass 6.2kg rests against a smooth vertical wall. If a coefficient of static friction between the ladder and ground is μ=0.3. Find the minimum angle θmin in radians such that the ladder will not slip. Please state your answer in radian to the nearest hundredth of a radian.
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A heavy swing door has a mass of m = 5,000 kg, a width w = 1.9 m, and a height H = 3.3 m. The door swings about a vertical axis passing through its center. The moment of inertia of this door about the vertical axis of rotation is given by I = 1/12 mw^2 (a)You stand on one side and push at the outer edge of the door and perpendicular to the face of the door with a force ofF = 8.0 N.Your friend pushes on the other outer edge of the door from the opposite side with the same force. What is the net torque, in N · m, applied to the door? (b)What is the angular acceleration of the door in rad/s? (c)Now consider a heavy door, with the same mass and dimensions as the one in part (a), that swings about a vertical axis passing through one long edge as shown in the diagram below. The moment of inertia of the door about this new axis of rotation is given by I = 1/3mw2, where m is the mass and w is the width of the door. How much force, in Newtons, must you and your friend each apply to…
A heavy swing door has a mass of m = 8,000 kg, a width w = 1.0 m, and a height H = 3.9 m. The door swings about a vertical axis passing through its center. The moment of inertia of this door about the vertical axis of rotation is given by I = 1 12 mw2. (a) You stand on one side and push at the outer edge of the door and perpendicular to the face of the door with a force of F = 12.0 N. Your friend pushes on the other outer edge of the door from the opposite side with the same force. What is the net torque, in N · m, applied to the door? (b)What is the angular acceleration of the door in rad/s? (c) Now consider a heavy door, with the same mass and dimensions as the one in part (a), that swings about a vertical axis passing through one long edge as shown in the diagram below. The moment of inertia of the door about this new axis of rotation is given by I = 1 3 mw2, where m is the mass and w is the width of the door. How much force, in Newtons, must you…