A block is attached to a horizontal spring with spring constant

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

200\,\text{N/m}

. At a certain instant the spring pulls on the block with a force of

-8.0\,\hat\imath\,\text{N}

(negative

x

-direction). What is the magnitude of the block’s displacement from equilibrium at that instant? (a)

0.20\,\text{m}

(b)

0.0040\,\text{m}

(c)

0.040\,\text{m}

(d)

0.080\,\text{m}