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A block of mass m produces an extension ...

A block of mass m produces an extension of 9 cm in an elastic spring of length 60 cm when it is hung by it, and the system is in equilibrium. The spring is cut in two parts of 40 cm and 20 cm lengths. The same block hangs in equilibrium with the help of these two parts connected in parallel. Find the extension (in cm) in this case.

A

9cm

B

6cm

C

3 cm

D

2cm

Text Solution

Verified by Experts

The correct Answer is:
D
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