Physics for Scientists and Engineers
Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Chapter 4, Problem 63P

(a)

To determine

The free-body diagram for the object that is hung by a rope from the ceiling of an elevator that is ascending but slowing.

(b)

To determine

The free-body diagram for the object hung from the roof of the elevator which is descending and speeding up.

(c)

To determine

The difference between the diagram shown in Figure 1 and Figure 2. The reason for the diagram not telling anything about the velocity of the object.

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Draw a diagram of the situation and label the givens in the problem: The cart's mass and the hanger's mass. Also label the direction of the cart and hanger's acceleration. Draw two force diagrams. One for the cart and one for the hanger. You can treat the track as frictionless. Remember that the force in the string will be the same throughout the entire string. Then define an x-y coordinate system and find the x and y components of the forces in your diagrams.
A block with a mass of m = 48 kg rests on a frictionless surface and is subject to two forces acting on it. The first force is directed in the negative x-direction with a magnitude of F1 = 10.5 N. The second has a magnitude of F2 = 21.5 N and acts on the body at an angle θ = 12° measured from horizontal, as shown. 1).Please draw the correct free body diagram  2).Write an expression for the component of net force, Fnet,x, in the x-direction, in terms of the variables given in the problem statement.  3).Write an expression for the magnitude of the normal force, FN, acting on the block, in terms of F2, g, and the other variables of the problem. Assume that the surface it rests on is rigid.  4).
5.0 kg) on a tilted wooden board with an angle of 0 = 30 There is a metal block (m from the horizontal. The block is initially at rest. The coefficient of static friction u, is equal to 0.55 and the coefficient of kinetic friction ux is 0.40. a) Draw a free body diagram of the metal block on the figure. Label and write all the forces in unit-vector notation with their magnitude (in variables) on the diagram below. b) Note that F, = 0, because the block can only move %3D along the board. Calculate the normal force. c) Will the block slide down? Show your calculations to support your answer. d) If your answer is "yes" in (c), then what is the acceleration of the block? (Note that F: If your answer is "no" in (c), then what is the static friction on the block? та.) %3D

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