Physics

Problem

0.25\,\text{kg}

block on a friction-less surface is attached to a horizontal spring with force constant

20\,\text{N}\!/\!\text{m}

. A simple pendulum is to be constructed so that its period matches that of the block–spring system for small-amplitude motion. What should be the length

l

of the pendulum? a)

0.51\,\text{m}

0.25\,\text{m}

0.12\,\text{m}

1.1\,\text{m}

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