An object with mass m is dropped from rest and we assume that the air resistance is proportional to the speed of the object. If s(t) is the distance dropped after t seconds, then the speed is v = s'(t) and the acceleration is a = v'(t). If g is the acceleration due to gravity, then the downward force on the object is mg − cv, where c is a positive constant, and Newton's Second Law gives m(dv/dt)=mg-cv Solve this as a linear equation. (Use v for v(t).) What is the limiting velocity? lim t → ∞ Find the distance the
An object with mass m is dropped from rest and we assume that the air resistance is proportional to the speed of the object. If s(t) is the distance dropped after t seconds, then the speed is v = s'(t) and the acceleration is a = v'(t). If g is the acceleration due to gravity, then the downward force on the object is mg − cv, where c is a positive constant, and Newton's Second Law gives m(dv/dt)=mg-cv Solve this as a linear equation. (Use v for v(t).) What is the limiting velocity? lim t → ∞ Find the distance the
Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter6: Motion In Two Dimensions
Section6.3: Relative Velocity
Problem 27PP
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An object with mass m is dropped from rest and we assume that the air resistance is proportional to the speed of the object. If s(t) is the distance dropped after t seconds, then the speed is v = s'(t) and the acceleration is a = v'(t). If g is the acceleration due to gravity, then the downward force on the object is mg − cv, where c is a positive constant, and Newton's Second Law gives
m(dv/dt)=mg-cv
Solve this as a linear equation. (Use v for v(t).)
What is the limiting velocity? lim t → ∞
Find the distance the object has fallen after t seconds. (Use s for s(t).)
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