Laws Of Motion Question 216

Question: A cart of mass M is tied by one end of a massless rope of length 10 m. The other end of the rope is in the hands of a man of mass M. The entire system is on a smooth horizontal surface. The man is at x = 0 and the cart at x = 10 m. If the man pulls the cart by the rope, the man and the cart will meet at the point[CBSE PMT 1997]

Options:

A) $ x=0 $

B) $ x=5m $

C) $ x=10m $

D) They will never meet

Show Answer

Answer:

Correct Answer: B

Solution:

In the absence of external force, position of centre of mass remain same therefore they will meet at their centre of mass.



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