How much work is done against the gravitational force on a 3.0 kg object when it is carried from the

Question

How much work is done against the gravitational force on a 3.0 kg object when it is carried from the ground floor to the roof of a building, a vertical climb of 240 m?

Answer 1

How much work is done against the gravitational force on a 3.0 kg object when it is carried from the ground floor to the roof of a building, a vertical climb of 240 m?

7.2 kJ ✓
6.8 kJ
4.6 kJ
8.4 kJ

Explanation

Work against gravity = mgh = weight × height gained.

W = 3.0 × 10 × 240 = 7,200 J = 7.2 kJ (taking g = 10 m/s²).

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