EBK PHYSICS OF EVERYDAY PHENOMENA
8th Edition
ISBN: 8220106637050
Author: Griffith
Publisher: YUZU
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Textbook Question
Chapter 7, Problem 1CQ
Does the length of time that a force acts on an object have any effect on the strength of the impulse produced? Explain.
Expert Solution & Answer
To determine
Whether the length of time that the force acts on an object have any effect on the strength of the impulse produced.
Answer to Problem 1CQ
Yes, the length of time that the force acts on an object definitely have effect on the strength of the impulse produced.
Explanation of Solution
The expression for the impulse produced when a force acts on a body for a particular interval of time is
The main aspect associated with increasing the length of the time the force acts on the object can reduce the effect of the average force acting on the body. Thus if the impulse is constant, if we increase the time interval of the impact, we can reduce the average force acting on the body.
Conclusion:
Therefore, the length of time that the force acts on an object definitely have effect on the strength of the impulse produced.
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The force of the quadriceps (Fq) and force of the patellar tendon (Fp) is identical (i.e., 1000 N each). In the figure below angle in blue is Θ and the in green is half Θ (i.e., Θ/2). A) Calculate the patellar reaction force (i.e., R resultant vector is the sum of the horizontal component of the quadriceps and patellar tendon force) at the following joint angles: you need to provide a diagram showing the vector and its components for each part. a1) Θ = 160 degrees, a2) Θ = 90 degrees. NOTE: USE ONLY TRIGNOMETRIC FUNCTIONS (SIN/TAN/COS, NO LAW OF COSINES, NO COMPLICATED ALGEBRAIC EQUATIONS OR ANYTHING ELSE, ETC. Question A has 2 parts!
Chapter 7 Solutions
EBK PHYSICS OF EVERYDAY PHENOMENA
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Impulse Derivation and Demonstration; Author: Flipping Physics;https://www.youtube.com/watch?v=9rwkTnTOB0s;License: Standard YouTube License, CC-BY