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Classical Mechanics

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Moderate

Gravitational Acceleration on a Planet

CLMECH-3GJEEK

An astronaut carefully places a 15-kg rock on the top of an elastic spring. As a result, the spring compresses by 0.22 m and its elastic potential energy increases by 6.0 J. What is the gravitational acceleration at the locality of the astronaut?

A

$5.2 \space \frac {m}{s^2}$

B

$1.7 \space \frac {m}{s^2}$

C

$3.6 \space \frac {m}{s^2}$

D

$9.8 \space \frac {m}{s^2}$