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Concept explainers
(a)
The
(a)
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Answer to Problem 92P
The angular displacement of Earth in one day is
Explanation of Solution
Write an expression to calculate the angular displacement of Earth in one day.
Here, the angular displacement of Earth in one day is
Conclusion:
Substitute
Thus, the angular displacement of Earth in one day is
(b)
The change in Earth’s velocity.
(b)
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Answer to Problem 92P
The change in Earth’s velocity is
Explanation of Solution
Write an expression to calculate the change in Earth’s velocity.
Here, the change in Earth’s velocity is
Conclusion:
Substitute
Thus, the change in Earth’s velocity is
(c)
The average acceleration during one day.
(c)
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Answer to Problem 92P
The average acceleration during one day is
Explanation of Solution
Write an expression to calculate the average acceleration during one day.
Here, the average acceleration during one day is
Conclusion:
Substitute
Thus, the average acceleration during one day is
(d)
Compare the average acceleration with Earth’s instantaneous radial acceleration.
(d)
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Answer to Problem 92P
The average acceleration with Earth’s is equal to the instantaneous radial acceleration.
Explanation of Solution
Write an expression to calculate the radial acceleration.
Here, the radial acceleration is
Conclusion:
Substitute
Thus, Earth’s motion for one day tends to make small angle at the Sun, thus, the arc length and the chord length along the Earth's orbit are very nearly equal.
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Chapter 5 Solutions
Physics
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- No Aiarrow_forwardCan someone help mearrow_forwardNeed help on the following questions on biomechanics. (Please refer to images below)A gymnast weighing 68 kg attempts a handstand using only one arm. He plants his handat an angle resulting in the reaction force shown.A) Find the resultant force (acting on the Center of Mass)B) Find the resultant moment (acting on the Center of Mass)C) Draw the resultant force and moment about the center of mass on the figure below. Will the gymnast rotate, translate, or both? And in which direction?arrow_forward
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