Physics

Problem

A block of mass

10\,\text{kg}

is suspended from a spring balance inside an elevator descending with uniform acceleration

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

. What is the reading of the spring balance? (Take

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

.) a)

128\,\text{N}

70\,\text{N}

68\,\text{N}

98\,\text{N}