Review | Constants A small block with a mass of 0.160 kg is attached to a cord passing through a hole in a frictionless, horizontal surface (the figure (Figure 1)). The block is originally revolving at a distance of 0.50 m from the hole with a speed of 0.65 m/s. The cord is then pulled from below, shortening the radius of the circle in which the block revolves to 0.15 m . At this new distance, the speed of the block is observed to be 2.17 m/s. Part A What is the tension in the cord in the original situation when the block has speed vo = 0.65 m/s ? Express your answer using two significant figures. ΑΣφ %3D Figure 1 of 1 Request Answer Submit Part B What is the tension in the cord in the final situation when the block has speed vi = 2.17 m/s ? %3D Express your answer using two significant figures. Αφ T =

Review | Constants A small block with a mass of 0.160 kg is attached to a cord passing through a hole in a frictionless, horizontal surface (the figure (Figure 1)). The block is originally revolving at a distance of 0.50 m from the hole with a speed of 0.65 m/s. The cord is then pulled from below, shortening the radius of the circle in which the block revolves to 0.15 m . At this new distance, the speed of the block is observed to be 2.17 m/s. Part A What is the tension in the cord in the original situation when the block has speed vo = 0.65 m/s ? Express your answer using two significant figures. ΑΣφ %3D Figure 1 of 1 Request Answer Submit Part B What is the tension in the cord in the final situation when the block has speed vi = 2.17 m/s ? %3D Express your answer using two significant figures. Αφ T =

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

Chapter5: More Applications Of Newton’s Laws

Section: Chapter Questions

Problem 19P: A crate of eggs is located in the middle of the flatbed of a pickup truck as the truck negotiates a...

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An object executes circular motion with constant speed whenever a net force of constant magnitude acts perpendicular to the velocity. What happens to the speed if the force is not perpendicular to the velocity?
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A crate of eggs is located in the middle of the flatbed of a pickup truck as the truck negotiates a curve in the flat road. The curve may be regarded as an arc of a circle of radius 35.0 m. If the coefficient of static friction between crate and truck is 0.600, how fast can the truck be moving without the crate sliding?
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A cat dozes on a stationary merry-go-round, at a radius of 5.40 m from the center of the ride. Then the operator turns on the ride and brings it up to its proper tuning rate of one complete revolution every 6.00 s. What is the least coefficient of static friction between the cat and the merry-go-round that will allow the cat to stay in place when it is to the right of the center of the ride, without sliding? The three forces acting on the cat must be identified. Which forces act on the cat? Gravitational force Static frictional force Tension Kinetic frictional force Normal force
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A pilot of weight w=170 lb in a jet aircraft executes a loop-the loop, as shown in Figure 4. In this maneuver, the aircraft moves in a vertical circle of radius 2.70 km at a constant speed of 225 m/s. Determine the ratio of the forces exerted by the seat on the pilot at the bottom and at the top of the loop.
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