A block of mass 1 kg is connected with a light spring of constant k = 100 N/m. Initially, the spring is compressed up to a compression of 0.2 m and finally comes to an elongation of 0.1 m. find the work done by the spring on the block.

Q: A block of mass 1 kg is connected with a light spring of constant k = 100 N/m. Initially, the spring is compressed up to a compression of 0.2 m and finally comes to an elongation of 0.1 m. find the work done by the spring on the block.

Numerical

(a) 1 J

(b) –1 J

(c) 1.5 J

(d) –1.5 J

Ans: (c)