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(Solved): At A Mail Sorting Facility, Packages Slide Down A Ramp But Are Stopped Part Way Down The Ramp So Tha...

At a mail sorting facility, packages slide down a ramp but are stopped part way down the ramp so that they can be scanned. While the packages are scanned, they are held in place by a horizontal force from a spring‑loaded arm. Calculate the minimum force that must be applied by this arm to hold a package on the ramp. The ramp is at an angle of θ=25.5∘ with the horizontal. The package has a mass of 6.75 kg. The coefficient of static friction between the ramp and the package is 0.455.

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