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Q2. our wheels each of mass 400 kg, diameter 0.5 m and radius of gyration 0.2 m. It is travelling at 2 m/s when it starts to descend an incline of 4°. The incline is 180 m long and resistance to motion is constant at 900 N. Calculate EACH of the following:

(a) the energy lost in descending the incline;

(b) the speed of the truck at the bottom of the incline.