A rocket has a total mass of 1.17 105 kg and a burnout mass of 1.03 104 kg, including engines, shell and payload. The rocket blasts off from Earth and exhausts all its fuel in 4.17 min, burning the fuel at a steady rate with an exhaust velocity of ve= 4.89 103 m/s.(a) If air friction and gravity are neglected, what is the speed of the rocket at burnout?(b) What thrust does the engine develop at liftoff?(c) What is the initial acceleration of the rocket if gravity is not neglected?

Name: A rocket has a total mass of 1.17 105 kg and a burnout mass of 1.03
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Description: A rocket has a total mass of 1.17 105 kg and a burnout mass of 1.03 104 kg, including engines, shell and payload. The rocket blasts off from Earth and exhausts all its fuel in 4.17 min, burning the fuel at a steady rate with an exhaust velocity of

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Classical Dynamics of Particles and Systems

5th Edition

ISBN:9780534408961

Author:Stephen T. Thornton, Jerry B. Marion

Publisher:Stephen T. Thornton, Jerry B. Marion

Chapter9: Dynamics Of A System Of Particles

Section: Chapter Questions

Problem 9.60P

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A rocket has a total mass of 1.17 10⁵ kg and a burnout mass of 1.03 10⁴ kg, including engines, shell and payload. The rocket blasts off from Earth and exhausts all its fuel in 4.17 min, burning the fuel at a steady rate with an exhaust velocity of v_e= 4.89 10³ m/s.

(a) If air friction and gravity are neglected, what is the speed of the rocket at burnout?

(b) What thrust does the engine develop at liftoff?

(c) What is the initial acceleration of the rocket if gravity is not neglected?

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