A 35 kg box needs to be lifted to the top of a loading dock which is also accessible by a 5 m long ramp as shown. a) What minimum force is required to lift the box straight up onto the loading dock? b) What minimum amount of work is required to lift the crate straight up onto the loading dock? c) What force is required to push the crate up the ramp so that the amount of work is the same as in part b)? Fig.9.49 Ramp 5 m 1.7 m 019 Loading dock m35 Ground