The Great Sandini is a 60- k g circus performer who is shot from a cannon (actua

Question

The Great Sandini is a 60-kg circus performer who is shot from a cannon (actually a spring gun). You don't find many men of his caliber, so you help him design a new gun. This new gun has a very large spring with a very small mass and a force constant of 1400N/m that he will compress with a force of 7000N . The inside of the gun barrel is coated with Teflon, so the average friction force will be only 31N during the distance of 5.0m that he moves in the barrel. At what speed will he emerge from the end of the barrel, a distance 1.0

Explanation / Answer

,k = 0.5 *7000^2/1400 -(31*5) -(60*9.8*1)

=16757

speed=

sq(2*
16757/60)

=
23.6340150348

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