1. 2. In a slider crank mechanism, the length of crank OB and connecting rod A Bare 125 mm and 500 mm respectively. The centre of gravity G of the connecting rod is 275 mm from the slider A. The crank speed is 600 r.p.m. clockwise. When the crank has tumed 45° from the inner dead centre position. determine: 1. velocity of the slider A. 2. velocity of the point G. and 3. angular velocity of the connecting rod A B Ans. 6.45 m/s : 6.75 m/s : 10.8 rad/s] In the mechanism, as shown in Fig. 7.32, OA and OB are two equal cranks at right angles rotating about O at a speed of 40 r.p.m. anticlockwise. The dimensions of the various links are as follows: 30° B E F C G 50 mm 25 mm D 40 mm Fig. 7.32 OA-OB-50 mm: AC-BD-175 mm; DE-CE-75 mm; FG-115 mm and EF-FC. Draw velocity diagram for the given configuration of the mechanism and find velocity of the slider G. [Ans. 68 mm/s]