a spring requires force 120N strech 6cm if we more streche spring 6cm so what is work ?

Answer 1

Work = Force x Distance

For a spring F = kx, so 120 = k·(0.06). Solving for k we get k = 2000. Note that I converted 6 cm to 0.06 m so everything was in SI units. To stretch the spring another 6 cm means a total of 12 cm or 0.12 m. The work done is:

Work = Force x Distance

Work = kx·x = kx²

Work = 2000·(0.12)² = ____? The units are joules.