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An  shaped thin uniform rod of total length  is free to rotate in a vertical plane about a horizontal axis at  as shown in Figure.The bar is released from rest. Neglect air and contact friction. Determine the angular velocity (in rad/s) at the instant when it has rotated through and reached the dotted position as shown. (Take 1/3m)


Question ID - 101419 :-

An  shaped thin uniform rod of total length  is free to rotate in a vertical plane about a horizontal axis at  as shown in Figure.The bar is released from rest. Neglect air and contact friction. Determine the angular velocity (in rad/s) at the instant when it has rotated through and reached the dotted position as shown. (Take 1/3m)

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Answer Key : (6) -

(6)

Using conservation of mechanical energy



Next Question :

Three balls and  are placed on a smooth horizontal surface. Ball  collides with ball  with an initial velocity  as shown in Fig. Find the total number of collisions between the balls (all collisions are elastic)


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