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 4.2, Problem 2aT
Predict:
- which spool will reach the floor first. Explain how your answer is consistent with your extended free-body diagrams.
- whether spool A will strike the floor to the left of the “×,” strike the floor to the right of the “×,” or fall straight down. Explain how your answer is consistent with your free-body diagrams.
Describe how the net force is related to the individual forces on a free-body diagram when the forces are exerted at different points on the object.
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PROBLEM SET # 8: PARTICLE UNDER A NET FORCE
On the space provided, present correct and organized solutions to the following answered
problems. Box the final answers. Detach each page neatly and submit to your instructor.
A 2.5-kg concrete block sliding on a vertical wall is being acted upon by a force P as
shown in the figure below. Assume that the coefficient of kinetic friction between the
2.
concrete block and the wall is 0.88.
148°
(a) Draw the free-body diagram of the concrete block.
(b) If the normal force exerted by the wall to the concrete block is 20.0 N, what
would be the magnitude of the external force P, and (Ans: 37.74 N)
(c) The acceleration of the block? (Ans: -15.56 m/s)
Free-body diagrams for four situations are shown below. For each situation, determine the net force acting upon the object. For each situation, just answer if the forces are BALANCED or UNBALANCED, no need to explain. Answer also the following questions briefly. Strictly don't handwrite. Please answer it completely. This is not a writing assignment and not graded.
Questions
What is a free body diagram?
What is the importance of a free body diagram?
How to construct a free body diagram?
SOLVE THE FOLLOWING PROBLEM AND SHOW YOUR COMPLETE SOLUTIONS. EXPLAIN YOUR ANSWER FOR BETTER UNDERSTANDING. IF APPLICABLE ILLUSTRATE A FREE BODY DIAGRAM.
Chapter 4 Solutions
Tutorials in Introductory Physics
Ch. 4.1 - Draw arrows on the diagram to represent the...Ch. 4.1 - Mark the position of each of the labeled points at...Ch. 4.1 - Suppose the wheel makes one complete revolution in...Ch. 4.1 - Would two observers on either side of a rotating...Ch. 4.1 - The diagrams at right show top and side views of...Ch. 4.1 - In the space at right sketch the position vectors...Ch. 4.1 - Let | in terms of |o| . 1. The wheel is made to...Ch. 4.1 - Suppose the wheel slows down uniformly, so that ||...Ch. 4.1 - A force of magnitude Fo is applied to point M as...Ch. 4.1 - Compare the magnitude of the net torque about the...
Ch. 4.2 - A ruler is placed on a pivot and held at an angle...Ch. 4.2 - Draw a free-body diagram for the ruler (after it...Ch. 4.2 - How would your free-body diagram change if the...Ch. 4.2 - Predict: which spool will reach the floor first....Ch. 4.2 - Obtain two spools and a ring stand. Use the...Ch. 4.2 - Consider the following discussion between three...Ch. 4.2 - Write down Newton’s second law for each spool....Ch. 4.3 - A T-shaped board of uniform mass density has two...Ch. 4.3 - Prob. 1bTCh. 4.3 - Attach day to the bottom left side of the board so...Ch. 4.3 - Prob. 2bTCh. 4.3 - C. Imagine that the T-shaped board (with no clay...
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