JEE · NEET Previous Year Question

Two blocks of masses and are tied to the ends of a string which passes over a light frictionless pulley.The blocks are held at rest at the same horizontal level and then released suddenly. The distance traversed by their centre of mass in 2 seconds is (acceleration due to gravity )

Topic: JEE PYQ

Answer: B. Full step-by-step solution below.

  1. A
  2. B
  3. C
  4. D

Correct answer: B

Solution

(b) The mass of two blocks are and .
The acceleration of masses is given as

The acceleration of the centre of mass is given by

The distance travelled by their centre of mass is

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