The box has a mass of 57 kg - Edexcel - GCSE Physics Combined Science - Question 3 - 2022 - Paper 1

To find the change in gravitational potential energy (GPE), we use the formula:

$\Delta GPE = m \times g \times h$

Where:

• $m = 57 \text{ kg}$ (mass of the box)
• $g = 10 \text{ N/kg}$ (gravitational field strength)
• $h = 2.1 \text{ m}$ (height lifted)

Substituting the values into the formula:

$\Delta GPE = 57 \times 10 \times 2.1$

Calculating this gives:

$\Delta GPE = 57 \times 21 = 1197 \text{ J}$

Rounding this to two significant figures, the change in potential energy is approximately:

$\Delta GPE \approx 1200 \text{ J}$