A body of mass 10 slugs is dropped from a height of 1000 ft with no initial velocity. The body encounters an air resistance proportional to its velocity. If the limiting velocity is known to be 320 ft/sec, find (a) an expression for the velocity of the body at any time t, (b) an expression for the position of the body at any time t, and (c) the time required for the body to attain a velocity of 160 ft/sec. v-320e 320 X= 3200e*+ 320- 3200 6.9 1es

Elements Of Electromagnetics
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12. A body of mass 10 slugs is dropped from a height of 1000 ft with no
initial velocity. The body encounters an air resistance proportional to its
velocity. If the limiting velocity is known to be 320 ft/sec, find (a) an
expression for the velocity of the body at any time t, (b) an expression for
the position of the body at any time t, and (c) the time required for the
body to attain a velocity of 160 ft/sec. v= -320e.
"+ 320
x = 3200e + 320t- 3200
6.9 sec
Transcribed Image Text:12. A body of mass 10 slugs is dropped from a height of 1000 ft with no initial velocity. The body encounters an air resistance proportional to its velocity. If the limiting velocity is known to be 320 ft/sec, find (a) an expression for the velocity of the body at any time t, (b) an expression for the position of the body at any time t, and (c) the time required for the body to attain a velocity of 160 ft/sec. v= -320e. "+ 320 x = 3200e + 320t- 3200 6.9 sec
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