QUESTION 4 [25 MARKS] Particles A and B as shown in Figure 4 are elevated 12 meters high from a given reference base. Particle A is projected down an incline of length 20 meters at the same time particle B is let to freely fall vertically. a) Determine the acceleration and velocity of particle A if both particles strike the base at the same time. [12 Marks] b) By using the concept of dynamic, calculate the angle of $alpha$ if the acceleration of particle A become half of the acceleration obtained in (a). Given that the mass of particle A is 15 kg. [9 Marks] c) Repeat for question (b), however the mass of particle A is changed to 20 kg. State the conclusion from your result. [4 Marks]
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