A flat board makes an angle of 28 with the horizontal and is 1.2 m long,...
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A flat board makes an angle of 28 with the horizontal and is 1.2 m long, as shown below. A coin starts sliding from rest at the top of the board. The coin has constant acceleration and it reaches a speed of 0.8 ms- at the bottom of the board. Let the mass of the coin be m (in kg) and the coefficient of sliding friction between the coin and the board be . coin 1.2 m 28% Model the coin as a particle and take the magnitude of the acceleration due to gravity to be g = 9.8ms-2 (a) Show that the acceleration of the coin is 0.27 ms-2 to two significant figures. (b) Draw a force diagram showing the forces acting on the coin when it is sliding down the board, including the directions of these forces. Define the symbols you use to denote the forces. Choose appropriate directions for the Cartesian unit vectors i and j, and mark these vectors on your diagram. (c) Find u, giving your answer to two significant figures. A flat board makes an angle of 28 with the horizontal and is 1.2 m long, as shown below. A coin starts sliding from rest at the top of the board. The coin has constant acceleration and it reaches a speed of 0.8 ms- at the bottom of the board. Let the mass of the coin be m (in kg) and the coefficient of sliding friction between the coin and the board be . coin 1.2 m 28% Model the coin as a particle and take the magnitude of the acceleration due to gravity to be g = 9.8ms-2 (a) Show that the acceleration of the coin is 0.27 ms-2 to two significant figures. (b) Draw a force diagram showing the forces acting on the coin when it is sliding down the board, including the directions of these forces. Define the symbols you use to denote the forces. Choose appropriate directions for the Cartesian unit vectors i and j, and mark these vectors on your diagram. (c) Find u, giving your answer to two significant figures.
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Related Book For
Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
Posted Date:
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