Physics

Physics

Problem

Calculate the gravitational potential energy of a 500 g500\,\text{g} apple held 6.0 m6.0\,\text{m} above the ground. Take g=9.8 m/s2g = 9.8\,\text{m/s}^2. a) 14.7 J14.7\,\text{J} b) 29.4 J29.4\,\text{J} c) 58.8 J58.8\,\text{J} d) 4.9 J4.9\,\text{J}
Intuitive explanation

Gravitational potential energy measures how much work gravity could do if an object falls—it depends on both the object's mass and its height above a reference point. The key is recognizing that PE=mghPE = mgh is a direct proportionality: heavier objects or those held higher store more energy. Just convert the mass to kilograms first, then multiply through.

Intuitive explanation

Gravitational potential energy measures how much work gravity could do if an object falls—it depends on both the object's mass and its height above a reference point. The key is recognizing that PE=mghPE = mgh is a direct proportionality: heavier objects or those held higher store more energy. Just convert the mass to kilograms first, then multiply through.

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