Question

Which of the following statements are correct ? [2017] (A) Centre of mass of a body always coincides with the centre of gravity of the body (B) Centre of mass of a body is the point at which the total gravitational torque on the body is zero (C) A couple on a body produce both translational and rotation motion in a body (D) Mechanical advantage greater than one means that small effort can be used to lift a large load (a) (A) and (B) (b) (B) and (C) (c) (C) and (D) (d) (B) and (D)

Answer 1

Answer:

(d) (B) and (D)

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Answer 2

Answer:

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