A block with weight 50 N stops on an inclined plane which has angle 0 = 30° to the horizontal Two observers try to analyse the forces on the block with their preferred reference. Observer A uses coordinate (Xa, Ya) as his reference while observer B uses coordinate (Xg, yB) as her reference(See figure 1). YA Observer A Block Observer B XA W XB Figure 1. (a) Decompose the weight, W and the normal force, Ñ in the coordinate system of observer A. (b) Decompose the weight, W and the normal force, Ñ in the coordinate system of observer B. (c) Determine the magnitude of friction obtained by A and B respectively if the block tends to slide down. (d) Are the two answers in part (c) same or different? What does the result imply?

A block with weight 50 N stops on an inclined plane which has angle 0 = 30° to the horizontal Two observers try to analyse the forces on the block with their preferred reference. Observer A uses coordinate (Xa, Ya) as his reference while observer B uses coordinate (Xg, yB) as her reference(See figure 1). YA Observer A Block Observer B XA W XB Figure 1. (a) Decompose the weight, W and the normal force, Ñ in the coordinate system of observer A. (b) Decompose the weight, W and the normal force, Ñ in the coordinate system of observer B. (c) Determine the magnitude of friction obtained by A and B respectively if the block tends to slide down. (d) Are the two answers in part (c) same or different? What does the result imply?

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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Concept explainers

Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”

Question

A block with weight 50 N stops on an inclined plane which has angle 0 = 30° to the horizontal.
Two observers try to analyse the forces on the block with their preferred reference. Observer
A uses coordinate (xẠ, YA) as his reference while observer B uses coordinate (Xg, Yg) as her
reference(See figure 1).
YA
Observer A
Block
Observer B
XA
W
XB
Figure 1.
(a) Decompose the weight, W and the normal force, Ñ in the coordinate
system of observer A.
(b) Decompose the weight, W and the normal force, Ñ in the coordinate
system of observer B.
(c) Determine the magnitude of friction obtained by A and B respectively if the
block tends to slide down.
(d) Are the two answers in part (c) same or different? What does the result
imply?

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