A) 1 cm
B) 2 cm
C) 0.5 cm
D) 4 cm
Correct Answer: B
Solution :
Key Idea: Restoring force is proportional to displacement. When body is hung from a spring and left, it executes SHM, hence \[F=kx=Mg\] where k is spring constant and x the extension produced. Given, \[{{M}_{1}}=M,{{M}_{2}}=2M,{{x}_{1}}=1\,cm\] \[\therefore \] \[{{x}_{2}}=\frac{{{M}_{2}}}{{{M}_{1}}}{{x}_{1}}=\frac{2}{1}\times 1=2\,cm\]You need to login to perform this action.
You will be redirected in
3 sec