To be able to use the conservation of energy on a moving body to determine key...

To be able to use the conservation of energy on a moving body to determine key characteristics about the mechanics of the system. A package of mass m = 0.70 kg is pushed across the surface by a jet of compressed air during an assembly-line process. The package is moved through a distance of s = 49.0 cm . The package and the surface 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 = 10.5 cm/s when it has reached the distance of 49.0 cm , determine the average force that the jet of compressed air must supply to the package

B) If it is now desired that the package be at rest when it has reached the distance of 49.0 cm , determine the average force that the jet of compressed air must supply to the package if the package is initially traveling in the s direction at a velocity of v = 19.0 cm/s .

C) If the plant has changed the mass of the package on the assembly line to m = 1.25 kg , determine the average force that the jet of compressed air must supply to the package if the package and surface now have a coefficient of kinetic friction of ?k = 0.18 . Use the same initial and final conditions as in Part B.

Expert Solution

samet mamat answered 2 years ago

Energy conservation law

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