Tutorials in Introductory Physics
1st Edition
ISBN: 9780130970695
Author: Peter S. Shaffer, Lillian C. McDermott
Publisher: Addison Wesley
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Textbook Question
Chapter 2.1, Problem 2bT
A second book of greater mass is placed on top of the first.
Sketch a free-body diagram for each of the book in the space below. Label all the forces as in part A.
Specify which of the forces are contact forces and which are non-contact.
1. Examine all the forces on the two free-body diagram you just drew. Explain why a force that appears on one diagram should not appear on the other diagram.
2. What type of force does the upper exert on the lower book (e.g., frictional, gravitational)?
Why would it be incorrect to say that the weight of the upper book acts on the lower book?
3. What observation can you make that allows you to determine the relative magnitudes of the forces on the upper book?
4. Are there any forces acting on the lower book that have the same magnitude as a force acting on the upper book? Explain.
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**please answer the last two parts only.** (f1s & acceleration of block 1)
Block 1 (20 kg) is pulled by a rope from left to right up a ramp which is inclined 20 degrees from the horizontal. The rope pulls on block 1 with a force of 340 N parallel to the surface of the inclined plane. The coefficient of kinetic friction between the block and the surface equals 0.4.IN THE SPACE PROVIDED BELOW , draw the free body diagram for block 1 using the two-subscript notation from class. Assume that the x-axis is parallel to the incline and positive in the direction up the incline. After completing the free body diagram, enter below each force and its x & y-components.
FORCES on BLOCK 1 Weight force on block 1 by EarthW1E = i + j NTension force on block 1 by RopeT1R = i + j NNormal force on block 1 by SurfaceN1S = i + j NFrictional force on block 1 by Surfacef1S = i + j N
What is the acceleration a of block 1?
a = i + j m/s2
First draw Free body diagram,then solve.
(Strictly don't copy from othersites)
SOLVE THE FOLLOWING PROBLEM AND SHOW YOUR COMPLETE SOLUTIONS. EXPLAIN YOUR ANSWER FOR BETTER UNDERSTANDING. IF APPLICABLE ILLUSTRATE A FREE BODY DIAGRAM.
Chapter 2 Solutions
Tutorials in Introductory Physics
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