College Physics
OER 2016 Edition
ISBN: 9781947172173
Author: OpenStax
Publisher: OpenStax College
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Chapter 8, Problem 55PE
Professional Application
Calculate the increase in velocity of a 4000-kg space probe that expels 3500 kg of its mass at an exhaust velocity of
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Problem 14: Suppose a space probe of mass m1
4200 kg expels m, = 3300 kg of its mass at a constant rate with an exhaust speed of
Vex = 2.15 x 10° m/s.
art (a) What is the increase in speed, of the space probe, in terms of the variables given in the introduction? You may assume the g
is negligible at the probe's location.
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Part (b) Calculate the increase in speed, in meters per second, of the space probe.
Calculate the increase in velocity of a 4000-kg space probe that expels 3500 kg of its mass at an exhaust velocity of 2.00×103 m/s . You may assume the gravitational force is negligible at the probe’s location.
A new design of Saturn 14 rocket with mass 1.15 x106 kg has a propulsion engine that can eject gases at a constant speed of 258.74 m/s (vGas) by burning fuel at a rate of 2.03 x10 5 kg/s (dmdT). In full tank, the rocket can carry a fuel of mass 40 x10 6 kg. If this design exceeds the velocity of 11,200 m/s it can successfully escape Earth's gravity. Determine if this is so. Find its maximum velocity (velyZ) in a PhysLab virtual simulation. (Pitch Angle = 0)
Chapter 8 Solutions
College Physics
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