Asked by divyanshkr13 | 16th Jun, 2022, 10:25: AM

Expert Answer:

Once the string is cut , then block-A , block-B and spring together form a system .
Spring force is internal to system . Only external force acting on system is gravitational force.
hence the system falls down with acceleration g = 9.8 m/s2
Hence acceleration of block-B ≈ 10 m/s2

Answered by Thiyagarajan K | 16th Jun, 2022, 02:34: PM