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Q1. An engine is being aligned on its seating using steel wedges under its base. The wedges have a taper of 3° and can be assumed to have face-to-face contact with the seating and the engine. The coefficient of friction at all surfaces is 0.4. The vertical load on EACH wedge can be assumed to be constant at 200 kN.

Calculate EACH of the following:

(a) the horizontal force required to drive EACH wedge in. (10)

(b) the work input to the wedge necessary to raise the engine 3 mm and the efficiency of the operation during this movement. (6)