1.

Which of following statements are correct ? ltbgt(a) Centre of mass of a body always coincides with the centre of gravity of the body (b) Central of mass of a body is the point at which the total garvitational torque on the body is zero (c ) Couple on a body produces both trasnlational and rotation motion in a body (d) Mechinical advantage greater than one means that small efforts can be used to lift a large loadA. (2) and (4)B. (1) and (2)C. (2) and (3)D. (3) and (4)

Answer» Correct Answer - B


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