It is required to determine the coordinates of the Centre of Mass of the Lamina shown in Figure 5 below. The missing por

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It Is Required To Determine The Coordinates Of The Centre Of Mass Of The Lamina Shown In Figure 5 Below The Missing Por 1 (31.41 KiB) Viewed 34 times

It Is Required To Determine The Coordinates Of The Centre Of Mass Of The Lamina Shown In Figure 5 Below The Missing Por 2 (39.57 KiB) Viewed 34 times

It is required to determine the coordinates of the Centre of Mass of the Lamina shown in Figure 5 below. The missing portion BEDB from the Lamina is a semi-circle of radius 3 units centred at C. The arc DF is a quarter-circle centred at B. FG=EC=3 units AG=2 units A 2 ודי F B (២ 3 E E с D Figure 5 (5 marks)
Question 6 (4 marks) An object of mass 12 kg moves with an initial velocity of (3i +9j) ms"!. A force of (21 -2]) N acts on the body for 6s. a) Find the vector impulse acting on the body and the velocity after the impulse ceases to act. (2 marks) b) Determine the Kinetic Energy change after the impulse has been applied. (2 marks) Question 7 (3 marks) A lorry of mass 4500 kg moving at 1.8 ms collides with a second stationary lorry of mass 9000 kg. Immediately after the collision the second lorry moves with a velocity of 0.5 ms! Find the velocity of the first lorry immediately after the collision and the Kinetic Energy loss in the collision. (3 marks)