Question 3 (15 marks) A shopper pushes an 8 kg shopping cart up a smooth 15 miline. The mi P, is 50 N. oth 15 cine. The magnitude of the horizontal force, (a) Draw the free body diagram for the cart. [4] (b) Write the corresponding equations for the sun forces on the cart and the sum of the moments of the forces on the cart about an appropriate point. (Use the X F format to determine the moments of the horizontal force and the weight). [4] (c) Hence, calculate the reactions at the rear wheers, the reactions at the front wheels and the acceleration of the cart. [7] Sunfiction (????) telewow PSOM 0.5 m 0.75 m 0.55 m - 0.45 m ingly incline = 1.25m "0.25 m