Rotational Motion Question 88
Question: Which of the following statements are correct?
[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 rotational motion in a body. [d] Mechanical advantage greater than one means that small effort can be used to lift a large load.
Options:
A) [c] and [d]
B) [b] and [d]
C) [a] and [b]
D) [b] and [c]
Show Answer
Answer:
Correct Answer: B
Solution:
- [b] Centre of mass may or may not coincide with centre of gravity.
