Question

(1) Centre of mass of a body always coincides with the centre of gravity of the body.
(2) Centre of mass of a body is the point at which the total gravitational torque on the body is zero.
(3) A couple on a body produce both translational and rotational motion in a body.
(4) Mechanical advantage greater than one means that small effort can be used to lift a large load.

A) 1 and 2
B) 2 and 3
C) 3 and 4
D) 2 and 4

Answer 1

Answer:

(c) 3 and 4 are correct

torque çan produce both rotational and transitional motion