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(a)
The magnitude of the force.
(a)
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Answer to Problem 95P
The magnitude of the force is
Explanation of Solution
In problem, time for which force applied is
Write impulse-momentum equation.
Here,
Write the expression for
Here,
Since the spaceship starts from rest,
Substitute
Substitute
In this problem speed of spaceship is a large fraction of
Write the equation for the relativistic momentum of spaceship.
Here,
Put the above equation in equation (II) to get the final expression for
Conclusion:
Substitute
Substitute
Therefore, the magnitude of the force is
(b)
The initial acceleration of the spaceship and comment on the magnitude of the acceleration.
(b)
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Answer to Problem 95P
The initial acceleration of the spaceship is equal to
Explanation of Solution
Write the expression for the acceleration.
Here,
Conclusion:
Substitute
Since acceleration is positive, direction of acceleration is in the direction of force. Since this acceleration is
Therefore, the initial acceleration of the spaceship is equal to
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Chapter 26 Solutions
Physics
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