Q. A block of mass $M$ is attached to the lower end of a vertical rope of mass. An upward force $P$ acts on the upper end of the rope. The system is free to move. The force exerted by the rope on the block is $\frac{PM}{M + m}$
A) In all cases
B) Only if the rope is uniform
C) In gravity-free space only
D) Only if $P > (M + m)g$
Explanation
The correct answer is Option C: In gravity-free space only.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.