Question: 1. (a) Briefly introduce the Newtonian mechanics (b) Two trains are traveling along a straight track, one behind the other. The fist train train

1. (a) Briefly introduce the Newtonian mechanics (b) Two trains are traveling

1. (a) Briefly introduce the Newtonian mechanics (b) Two trains are traveling along a straight track, one behind the other. The fist train train is travelling at 12m/s. The second train approaching from the rear is traveling at 20m/s. When the second train is 200m behind the first, the operator applies the brakes producing a constant deceleration of 0.2m/s. Will the trains collide and if so, where and when? 2. (a) What do you understand by moment of inertia of a rigid body? (b) Calculate the moment of inertia and the radius of gyration of the following: (i) Solid cylinder of mass 40kg and radius 50cm (ii) Hollow sphere of mass 15kg and radius 2m.

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