Figure 4 shows a truck lifting a box - Edexcel - GCSE Physics Combined Science - Question 3 - 2022 - Paper 1

To calculate the change in gravitational potential energy (ΔGPE), we use the formula:

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

where:

• $m$ is the mass of the box (57 kg)
• $g$ is the gravitational field strength (10 N/kg)
• $h$ is the height the box is lifted (2.1 m)

Now substituting the values into the equation:

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

Calculating this gives:

$\Delta GPE = 57 \times 21 = 1197 J$

When rounded, the change in gravitational potential energy is approximately 1200 J.