To be able to use the conservation of energy on a moving body todetermine key characteristics about the mechanics of the system. Apackage of mass m = 0.70 kg is pushed across the surface by a jetof compressed air during an assembly-line process. The package ismoved through a distance of s = 49.0 cm . The package and thesurface are known to have a coefficient of kinetic friction of ? k= 0.13 . The package is initially at rest for this process.
A)If the package must be moving at a speed of v = 10.5cm/s when it has reached the distance of 49.0 cm , determine theaverage force that the jet of compressed air must supply to thepackage
B) If it is now desired that the package be at rest when it hasreached the distance of 49.0 cm , determine the average force thatthe jet of compressed air must supply to the package if the packageis initially traveling in the s direction at a velocity ofv = 19.0 cm/s .
C) If the plant has changed the mass of the package on theassembly line to m = 1.25 kg , determine the average forcethat the jet of compressed air must supply to the package if thepackage and surface now have a coefficient of kinetic friction of?k = 0.18 . Use the same initial and finalconditions as in Part B.
