A spring balance of negligible spring mass carries a light pan of mass inside an elevator

PHYSICS · Subjective · AP · Physics 1: Algebra-based · Force and Translational Dynamics · Force and Translational Dynamics

Problem

A spring balance of negligible spring mass carries a light pan of mass

0.20\,\text{kg}

inside an elevator. On the Earth at rest, an extension of

5.0\,\text{cm}

corresponds to a

1.50\,\text{kg}

load. While the elevator moves upward with a uniform acceleration of

2.0\,\text{m}\,\text{s}^{-2}

, an unknown block is placed on the pan and the extension becomes

6.0\,\text{cm}

. Determine the mass of the block. Take

g = 9.8\,\text{m}\,\text{s}^{-2}