A spring of constant is compressed by

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

Problem

A spring of constant 250 N m−1250\,\text{N\,m}^{-1} is compressed by 0.20 m0.20\,\text{m}. For a 5 kg5\,\text{kg} mass, what height hh (above the chosen reference level) would have the same gravitational potential energy as the elastic energy stored in the spring? (Take g=10 m s−2g=10\,\text{m\,s}^{-2}.) (a) 0.20 m0.20\,\text{m} (b) 1.0 m1.0\,\text{m} (c) 0.10 m0.10\,\text{m} (d) 0.50 m0.50\,\text{m}

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