Problem 2 on crank and connecting rod mechanism / Relative velocity method/rubbing velocity at pin

The crank and connecting rod of a theoretical steam engine are 0.5 m and 2 m long respectively. The crank makes 180 rpm in clockwise direction. When it has turned 45° from inner dead centre position, determine
1. velocity of piston 2. angular velocity of connecting rod. 3. velocity of point E on the connecting rod 1.5 m from gudgeon pin 4. velocities of rubbing at the pins of crankshaft , crank and cross head when diameters of their pins are 50 mm, 60mm and 30 mm respectively
5. Position and linear velocity of any point G on the connecting rod which has least velocity relative to crank shaft.





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