Figure B2 shows a crank driven assembly that comprises three connected slender bars (AB, BC and CDE) that produce oscillatory motion at point E. Each of the bars are of uniform section and have a mass moment of inertia for 2-2 rotation about their centre of mass (lc) of ml², where m = mass and /= length. For the instant shown: (i) Show that the velocity of point B is -3i m/s (ii) Show that the velocity of point C is 4j m/s (iii) Determine the angular velocity of bar CDE (iv) Determine the angular accelerations of bars BC and CDE (v) Determine the acceleration of the centre of mass of BC (vi) Given that the mass of BC = 2 kg and the mass of CDE is 3 kg, determine the forces exerted on BC by the pins at B and C.

Q: need help with part b i solved a prior

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Free undamped vibrations

Whenever an object/system displaces in either side of its equilibrium position with the help of an external/internal means, then the object/system moves regularly or randomly on both sides of its equilibrium position. This motion is called vibration. Generally, there are three types of vibration: longitudinal vibration, transverse vibration, and torsional vibration.