The diagram below is a top-down view of two children pulling a 12.1-kg sled along the snow. The first child exerts a force of |F1| = 11.0 N at an angle 0, = 45.0° counterclockwise from the positive x direction. The second child exerts a force of |F2| = 6.00 N at an angle 02 = 30.0° clockwise from the positive x direction. We use a right-handed coordinate system with the +x axis and +z axis in the horizontal plane, and the +y axis out of the page. F2 (a) Find the friction force acting on the sled if it moves with constant velocity. Express your answer in vector form. f = N (b) What is the coefficient of kinetic friction between the sled and the ground? (c) What is the acceleration of the sled if F1 is doubled and F2 is halved in magnitude? Express your answer in vector form. a = m/s?

The diagram below is a top-down view of two children pulling a 12.1-kg sled along the snow. The first child exerts a force of |F1| = 11.0 N at an angle 0, = 45.0° counterclockwise from the positive x direction. The second child exerts a force of |F2| = 6.00 N at an angle 02 = 30.0° clockwise from the positive x direction. We use a right-handed coordinate system with the +x axis and +z axis in the horizontal plane, and the +y axis out of the page. F2 (a) Find the friction force acting on the sled if it moves with constant velocity. Express your answer in vector form. f = N (b) What is the coefficient of kinetic friction between the sled and the ground? (c) What is the acceleration of the sled if F1 is doubled and F2 is halved in magnitude? Express your answer in vector form. a = m/s?

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter4: The Laws Of Motion

Section: Chapter Questions

Problem 7WUE: Calculate the normal force on a 15.0 kg block in the following circumstances: (a) The block is...

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One great form of athletic competition for bulldogs, American pit bull terriers, huskies, and many other breeds is the weight pull. Many of these dogs can pull weights two orders of magnitude greater than their own weight! Railsplitter, an American pit bull terrier, can pull a sled that has a total weight of 2215 lb along a horizontal surface. Suppose he pulls with a horizontal force of 3.50 103 N while friction is also working against the sled. If the magnitude of the net acceleration of the sled is 0.152 m/s2, find the value of the coefficient of kinetic friction, k, between the sled and the pulling surface. (The sled is normally on a set of rails.)
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