EP CONCEPTUAL PHYSICS-ONLINE ACCESS
9th Edition
ISBN: 9780133246810
Author: Hewitt
Publisher: SAVVAS L
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Textbook Question
Chapter 3, Problem 50A
Here is a stone sliding down a friction-free incline.
a. Identify the forces that act on it and draw appropriate force Vectors.
b. By the parallelogram rule, construct the resultant force on the stone (carefully showing it has a direction parallel to the incline—the same direction as the stone’s acceleration).
(a)
Expert Solution
To determine
The forces that act on the stone and a free body diagram.
Answer to Problem 50A
The forces acts on the stone are weight and normal reaction.
Explanation of Solution
According to the given situation, the force of weight will act in the downward direction and the normal force will be acting perpendicular to the stone’s motion.
Free body diagram:
Conclusion:
The forces act on the stone is weight and normal reaction.
(b)
Expert Solution
To determine
Construction of resultant force on the stone.
Answer to Problem 50A
The resultant vector is parallel to the incline as shown in the figure.
Explanation of Solution
Introduction:
According to the parallelogram law of vector addition, the resultant vector is the diagonal of the parallelogram of the vectors.
In the given situation the resultant vector is shown in the given construction and will be parallel to the given incline.
Construction:
Conclusion:
The resultant vector is parallel to the incline as shown in the figure.
Chapter 3 Solutions
EP CONCEPTUAL PHYSICS-ONLINE ACCESS
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