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A mass of 5 kg is connected to a spring....

A mass of 5 kg is connected to a spring. The potential energy curve of the simple harmonic motion executed by the system is shown in the figure. A simple pendulum of length 4 m has the same period of oscillation as the spring system. What is the value of acceleration due to gravity on the planet where these experiments are performed ?

A

`10 m//s^2`

B

`9.8 m//s^2`

C

`4m//s^2`

D

`5 m//s^2`

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